5. Serial killer's move
8. Mafia's move
13. Serial killer's special move
14. Mafia kill
15. Serial killer kill
17. Remote mafia kill
It's clear that the serial killer has three special moves. A regular kill, a powerful special move (maybe a mass kill), and something simple (maybe a check). Any other ideas? Maybe he used something today.
The mafia also has peaceful special moves, simple kills, and a remote kill, which belongs to you know who.