Like Father Like Son Like Hell

S4, E7: After Robert and his sister, Carmen (recurring guest star Tisha Campbell-Martin), learn that the man who raised them isn't Robert's actual father, Dirk and Robert track down his biological dad, Luther (Richard Lawson - "Dead Like Me")--and Robert discovers a shocking secret about him. Meanwhile, although Bobby tries to hide the fact that Courtney invited her boyfriend over to the house while Neesee was working, Neesee quickly discovers that the two are hiding something.