After reading that a serial killer is on the loose, the gang notices that Mac is acting shady and decides to find out if he's the man behind the murders.
It's Always Sunny in Philadelphia
Mac Is a Serial Killer
season 3 episode 10
episode aired on october 2007
Episode rating
Cast of episode
63
28
5
3
2
- Mac
- Charlie Kelly
- Frank Reynolds
- Dee Reynolds
- Dennis Reynolds
- Waitress
- Mrs. Mac
- Carmen
- Pepper Jack
- Gary