The woman who killed Charlie Sheen's character in Two And A Half Men has filed papers to end her five-year marriage to actor Jimmi Simpson.

Melanie Lynskey, who played the stalker-turned-lover of Sheen's character Charlie Harper on the show, has filed for divorce.

The actress has cited irreconcilable differences.

She and It's Always Sunny in Philadelphia star Simpson separated in April (12), according to Tmz.com.