Dollhouse returns with a tense Sierra-centric episode (directed by Star Trek's Jonathan Frakes) and Neil Patrick Harris belts out some evil tunes on Batman: The Brave and the Bold. Supernatural takes the week off and Fringe is a repeat (that might get preempted by baseball), but there's still plenty to watch this week.
Heroes, " Tabula Rasa" - Samuel tries to help Sylar discover his true identity, which is probably a terrible idea considering Sylar is a sociopath who gets his kicks murdering people with abilities. I doubt Sylar will want to be a soldier in Samuel's Carnie Brotherhood once he discovers his own inner Magneto. Back in New York, Peter and HRG track down a healer to save Hiro from dying. (Monday, 8 p.m. ET on NBC.)
Head after the jump for more TV picks and previews.