You were a police officer, and Velikan was a criminal who had been evading capture for years. He always found an alibi, even when all the evidence was against him. And his lawyer was a real pain in the neck. So you decided to take matters into your own hands, follow him, and catch him red-handed. And it was not in vain – you managed to catch him practically in the act of murder.

You handcuffed him before he could react, so now he was completely in your power. But Velikan clearly didn't like this situation, so he said, "Listen... I have a proposition for you. You let me go, and I'll bring you something interesting tomorrow. You'll find out more details if you let me go."