Only a few episodes of season four are left, and for those of you who have trouble waiting a measly six days for a new episode of “Dexter”, beyond the break you’ll find two new clips from this Sunday’s episode. In other TV news, “Prison Break” star Marshall Allman will be joining the cast of HBO’s “True Blood” as a regular for the show’s third season. He’ll will play Tommy Mickens, the long-lost younger brother of Sam Merlotte (Sam Trammell) who works at a Tire Depot in Arkansas. He is the second new series regular cast on Alan Ball’s drama following the hire of Denis O’Hare as Russell Eddington, the Vampire King of Mississippi. Meanwhile, Shannon Lucio has landed a guest role on the vampire drama. Lucio will play Caroline Compton, the wife of Bill Compton (Stephen Moyer) who lived during the Civil War. Amber Dawn Landrum played the character in a flashback on the show’s first season. Production on the third season of “Blood” begins this week in Los Angeles.