Cool puzzle. I believe I have the solution (select text):
Spoiler wrote:3 combinations are still possible:
1. Pop - Little Italy - Bank Job
2. Doc - Little Italy - Mob Killing
3. Pop - Central Station - Smuggling
Since you only need the crime to solve, Bank Job allows you to deduce everything:
1. If Bank Job is correct: solution 1
2. If adjacent (meaning Mob Killing): solution 2
3. If unrelated (meaning Smuggling): solution 3
In real-time I probably wouldn't have figured this out fast enough, so I think my card would have been Rusty to annoy blue.
See also this Paint masterpiece:
Red has already solved his case though, so it's a tie at best.