Ok. Scratch that. No one stole his prized possessions until now.

[He shrugs, and hands it over.]

Not like he's gonna need it. Go nuts, kid. Lemme know if he decides to haunt you for it.

[Venkman goes back to look over the dead body, his hands hovering over it slightly as he tries to gather the guts to actually Touch A Corpse. He wouldn't bother, but the cops are useless at best, corrupt at worst. The least he can do is try to maybe contact this guy's next-of-kin or something. Maybe even find a couple tips as to who did this and why.

Without the wallet, that's all seeming less and less likely, but it can't hurt to try to do a thorough examination, right?]

You got a stick I can poke him with?

[Or he could do that. Look, he doesn't want to touch dead human flesh today, he just ate.]