or something doesn't work； I tell somebody。 And they e right down； and they know the system … how it works … and we go over the problem together； and it gets fixed。 Right away。 Problems get fixed here。 That's the difference。 I tell you： these people pay attention。〃
〃So you like it here。〃
〃They always treated me okay；〃 Phillips said； nodding。
That didn't exactly strike me as a glowing endorsement。 I had the feeling this guy wasn't mitted to his employers and a few questions could drive the wedge。 All we had to do was encourage the break。
〃Loyalty is important；〃 Connor said； nodding sympathetically。
〃It is to them；〃 he said。 〃They expect you to show all this enthusiasm for the pany。 So you know； I always e in fifteen or twenty minutes early； and stay fifteen or twenty minutes after the shift is over。 They like you to put in the extra time。 I did the same at Van Nuys； but nobody ever noticed。〃
〃And when is your shift？〃
〃I work nine to seven。〃
〃And tonight？ What time did you e on duty？〃
〃Quarter to nine。 Like I said； I e in fifteen minutes early。〃
The original call had been recorded about eight…thirty。 So if this man came at a quarter to nine； he would have arrived almost fifteen minutes too late to see the murder。 〃Who was on duty before you？〃
〃Well； usually it's Ted Cole。 But I don't know if he worked tonight。〃
〃Why is that？〃
The guard wiped his forehead with his sleeve； and looked away。
〃Why is that； Mr。 Phillips？〃 I said； with a little more force。
The guard blinked and frowned； saying nothing。
Connor said quietly； 〃Because Ted Cole wasn't here when Mr。 Phillips arrived tonight； was he； Mr。 Phillips？〃
The guard shook his head。 〃No； he wasn't；〃
I started to ask another question； but Connor raised his hand。 〃I imagine； Mr。 Phillips； you must have been pretty surprised when you came in this room； at a quarter to nine。〃
〃You damn right I was；〃 Phillips said。
〃What did you do when you saw the situation？〃
〃Well。 Right away； I said to the guy； 'Can I help you？' Very polite but still firm。 I mean； this is the security room。 And I don't know who this guy is； I've never seen him before。 And the guy is tense。 Very tense。 He says to me； 'Get out of my way。' Real pushy； like he owns the world。 And he shoves past me； taking his briefcase with him。
〃I say； 'Excuse me； sir； I'll have to see some identification。' He don't answer me； he just keeps going。 Out the lobby and down the stairs。〃
〃You didn't try and stop him？〃
〃No； sir。 I didn't。〃
〃Because he was Japanese？〃
〃You got that right。 But I called up to central security … it's up on the ninth floor … to say I found a man in the room。 And they say； 'Don't worry； everything is fine。' But I can hear they're tense； too。 Everybody is tense。 And then I see on the monitor 。 。 。 the dead girl。 So that's the first I knew what it was about。〃
Connor said； 〃The man you saw。 Can you describe him？〃
The guard shrugged。 〃Thirty； thirty…five。 Medium height。 Dark blue suit like they all wear。 Actually he was more hip than most of them。 He had this tie with triangles on it。 Oh … and a scar on his hand； like a burn or something。〃
〃Which hand？〃
〃The left hand。 I noticed it when he was closing the briefcase。〃
〃Could you see inside the briefcase？〃
〃No。〃
〃But he was closing it when you came in the room？〃
〃Yes。〃
〃Was it your impression he took something from this room？〃
〃I really couldn't say； sir。〃
Phillips's evasiveness began to annoy me。 I said； 〃What do you think he took？〃
Connor shot me a look。
The guard went bland： 〃I really don't know； sir。〃
Connor said； 〃Of course you don't。 There's no way you could know what was in somebody else's briefcase。 By the way； do you make recordings from the security cameras here？〃
〃Yes； we do。〃
〃Could you show me how you do that？〃
〃Sure thing。〃 The guard got up from the desk and opened a door at the far end of the room。 We followed him into a second small room； almost a closet； stacked floor to ceiling with small metal boxes； each with stenciled notations in Japanese kanji script； and numbers in English。 Each with a glowing red light； and an LED counter； with numbers running forward。
Phillips said； 〃These are our recorders。 They lay down signals from all the cameras in the building。 They're eight…millimeter； high…definition video。〃 He held up a small cassette； like an audio cassette。 〃Each one of these records eight hours。 We change over at nine p。m。； so that's the first thing I do when I e on duty。 I pop out the old ones； and switch over to the fresh ones。〃
〃And did you change cassettes tonight； at nine o'clock？〃
〃Yes； sir。 Just like always。〃
〃And what do you do with the tapes you remove？〃
〃Keep 'em in the trays down here；〃 he said； bending to show us several long； thin drawers。 〃We keep everything off the cameras for seventy…two hours。 That's three days。 So we keep nine sets of tapes all together。 And we just rotate each set through； once every three days。 Get me？〃
Connor hesitated。 〃Perhaps I'd better write this down。〃 He produced a small pad and a pen。 〃Now； each tape lasts eight hours； so you have nine different sets 。 。 。 。〃
〃Right； right。〃
Connor wrote for a moment； then shook his pen irritably。 〃This damn pen。 It's out of ink。 You have a wastebasket？〃
Phillips pointed to the corner。 〃Over there。〃
〃Thank you。〃
Connor threw the pen away。 I gave him mine。 He resumed his notes。 〃You were saying； Mr。 Phillips； that you have nine sets 。 。 。〃
〃Right。 Each set is numbered with letters； from A to I。 Now when I e in at nine； I eject the tapes and see whatever letter is already in there； and put in the next one。 Like tonight； I took out set C； so I put in set D； which is what's recording now。〃
〃I see；〃 Connor said。 〃And then you put tape set C in one of the drawers here？〃
〃Right。〃 He pulled open a drawer。 〃This one here。〃
Connor said。 〃May I？〃 He glanced at the neatly labeled row of tapes。 Then he quickly opened the other drawers； and looked at the other stacks of tapes。 Except for the different letters； all the drawers looked identical。
〃I think I understand now；〃 Connor said。 〃What you actually do is use nine sets in rotation。〃
〃Exactly。〃
〃So each set gets used once every three days。〃
〃Right。〃
〃And how long has the security office been using this system？〃
〃The building's new； but we've been going； oh； maybe two months now。〃
〃I must say it's a very well…organized system；〃 Connor said appreciatively。 〃Thank you for explaining it to us。 I have only a couple of other questions。〃
〃Sure。〃
〃First of all； these counters here… 〃 Connor said； pointing to the LED counters on the video recorders。 〃They seem to show the elapsed times since the tapes began recording。 Is that right？ Because it's now almost eleven o'clock； and you put in the tapes at nine； and the top recorder says 1：55：30 and the next recorder says 1：55：10； and so on。〃
〃Yes； that's right。 I put the tapes in one right after another。 It takes a few seconds between tapes。〃
〃I see。 These all show almost two hours。 But I notice that one recorder down here shows an elapsed time of only thirty minutes。 Does that mean it's broken？〃
〃Huh；〃 Phillips said； frowning。 〃I guess maybe it is。 'Cause I changed the tapes all one after another； like I said。 But these recorders are the latest technology。 Sometimes there are glitches。 Or we had some power problems。 Could be that。〃
〃Yes。 Quite possibly；〃 Connor said。 〃Can you tell me which camera is hooked to this recorder？〃
〃Yes； of course。〃 Phillips read the number off the recorder； and went out to the main room with the monitor screens。 〃It's camera four…six slash six；〃 he said。 〃This view here。〃 He tapped the screen。
It was an atrium camera； and it showed an overall view of the forty…sixth floor。
〃But you see；〃 Phillips said； 〃the beauty of the system is； even if one recorder screws up； there are still other cameras on that floor； and the video recorders on the others seem to be working okay。〃
〃Yes； they do；〃 Connor said。 〃By the way； can you tell me why there are so many cameras on the forty…sixth floor？〃
〃You didn't hear it from me；〃 Phillips said。 〃But you know how they like eff