Many new cast members are coming on board Season 4 of Ray Donovan.

Will Ray And Abby Officially Split Up In Season 4? 

In the most recent announcement of a cast addition, it was revealed that actor Dominque Columbus will be joining the cast. Deadline revealed that Columbus will be playing the part of "Damon, described as a street-smart, homeless teen who packs a mean punch and becomes involved with the Donovan family."

This development comes at the heels of another casting announcement for the show, TVLine revealed that Lisa Bonet -- best known for her work on The Cosby Show -- will play the part of Marisol, "an unstable woman with a damaging secret."

Will Katie Holmes Be Back For Season 4?  

These two join a bunch of other new cast members for the show of late.

Previously, Deadline reported that Ted Levine and Ismael Cruz Cordova are set to come on board season 4 of Ray Donovan.

The report reveals that Levine will play "Little Bill Primm, the proud owner of a casino in Primm, NV" and Cordova will portray "Hector, a middleweight boxing champion who forms a bond with Ray."

Prior to that, Variety also reported that Revenge alum Gabriel Mann is joining the cast of season 4 of Ray Donovan.

According to the report Mann will appear in three episodes of the season. He is set to play Jacob Waller, "an aggressive attorney who represents high-profile clients."

Season 4 of Ray Donovan will feature 12 one hour episodes and is expected to begin production in 2016.

Watch the preview for the finale of season 3: