Alyssa Milano to visit ABC's 'Castle'

Actress Alyssa Milano, who will be the star of the ABC midseason comedy, "Romantically Challenged," will also be popping up on ABC's "Castle" for a guest stint.

Milano will be playing the ex-love of mystery novelist Richard Castle, played by Nathan Fillion, which is bound to put a wrench in the flirtatious laden relationship that has begun to unfold between Castle and NYPD detective Kate Beckett, played by Stana Katic.

"Castle" is into its second season on the network and has Castle, successful mystery/detective novelist, working with the NYPD, Detective Beckett in particular, to harness ideas for use in his new detective novel series, all the while aiding Beckett in solving incoming crimes.

Milano has been a television series staple since she was a child, appearing on two smash television shows. The first as Tony Danza's precocious daughter, Samantha, on the hit ABC series, "Who's the Boss," which aired from 1984 to 1992. Milano's second successful series was on the WB's "Charmed," as one of the "Charmed" Halliwell sisters, Phoebe Halliwell. The series was produced by the late Aaron Spelling and written and created by Constance M. Burge. The series followed the three Halliwell sisters as they used their potent powers as "The Charmed Ones" to battle and defeat the constant swarm of evil demons, warlocks, etc., sent to destroy them by The Source. "Charmed" aired from Oct. 7, 1998 to May 21, 2006 on the WB.