Rachael Harris Rachael Harris

Rachael Harris is joining the cast of My Boys, TVGuide.com has learned.

Harris (Notes from the Underbelly) will play Mike's (Jamie Kaler) neighbor and love interest, Marcia.

Exclusive: My Boys picked up for fourth season

The 42-year-old actress will first appear in the latter half of Season 4 and will play an integral part in the season finale. Harris most recently guest-starred on ABC's Cougar Town in November, and appeared in the summer smash The Hangover. She will next be seen in the film Diary of a Wimpy Kid, which hits theaters Friday.

My Boys's new season premieres on Sunday, July 25 at 10/9c on TBS.