FBI Investigating Alleged Jon Cryer Murder Plot

Jon Cryer stars with Charlie Sheen on Two and a Half Men. Hopefully the kid on the show isn't involved in a scandal too, 'cause they're 2-for-2 1/2 right now.

Not that Cryer had anything to do with his, unlike Sheen. He has told authorities his life was in danger - possibly by a hit man - and the FBI is investigating.

Cryer sounded the alarm last Friday when he said believed his ex-wife hired a hit man to take him out. The two have been battling in a bitter custody fight.

According to reports, the FBI has been on this for a week, with no known suspects at this time. Cryer's ex-wife says she is unaware of any threat against Jon.

Security descended on the set the show last Friday. This week's show will also be taped without an audience ... but it's for creative, not security reasons.

No one to laugh at hilarious Two and a Half Men quotes? Tragic ...

Hopefully a hit man doesn't off Jon Cryer. That's scary stuff.