The lab assistant turned in the doorway. “And it's too bad that you think Krivoshein is dead.” “One of those characters who likes to make a grand exit. Always have the last word.” Onisimov chuckled. “I've seen plenty like him. But he'll come round after a while.”

Matvei Apollonovich lit a cigarette and drummed his fingers on the desk. At first all the clues (faked papers, medical testimony, circumstances) led him to think that the assistant, if he wasn't the killer, was at least actively involved in Krivoshein's death. But this conversation had changed his mind. Not what the suspect had said, but how. He did not sense in him the forethought, the game playing, that fatal game playing that gives away the criminal long before there is any evidence.

“It is looking like an unpremeditated murder. He said himself, 1 don't know if it was me or not. But what about the skeleton? How did it happen? And did it happen? And what about the attempt to pass himself off as Krivoshein by using a theoretical explanation? Is he faking? And what if the absence of game playing is just the most subtle game of all? No, where would such a young, inexperienced fellow develop that? And then, what motives are there for a premeditated murder? What was going on between them? And what about the forged documents?”

Matvei Apollonovich's mind hit a dead end. “All right, let's look into the circumstances.” He stood up and looked out into the hall. Assistant Professor Hilobok was pacing up and down.

“Please come in! I asked you here, comrade Hilobok, to — “

“Yes, yes, I understand,” Hilobok nodded. “Others experience tragedy, and I clean up the messes. People do die of old age, and may God grant us both such ends, Matvei Apollonovich, eh? But Krivoshein never did anything the way everyone else did. No, no, I'm sorry for him. Don't think… it's always a pity when a man dies, right? But Valentin Vasilyevich had caused me so many problems in the past. And all because he was a stubborn character, with no respect for anyone, no consideration, diverging from the collective time and time again.”