Isaiah Washington by Jean Baptiste Lacroix/ WireImage.com
Isaiah Washington has been booked for a guest-starring role on A&E's The Cleaner, which premieres this Tuesday at 10 pm/ET. Though details were few at first, I have since uncovered lots more on how the Grey's Anatomy alum will fit into the episode.

In "The 11th Hour," Washington will play a traditional, well-schooled interventionist who crosses swords with Benjamin Bratt's title character - a recovered addict who has his own "unconventional" ways of helping others - when they both attempt to treat the same girl.

Since parting ways with ABC's Grey's Anatomy, Washington's only TV appearance has come in the form of a mini-run on NBC's short-lived Bionic Woman. (Well, that and as a newspaper clipping on the Seattle Grace bulletin board. But let's not go there.) He also has done the occasional indie.

Other guest-stars on The Cleaner will include Tate Donovan ( Damages), Annabeth Gish ( Brotherhood), Kathy Baker and Eric Roberts. - Matt Mitovich