What to Watch on Sunday: Time to get behind "Sherlock"

Sherlock: The Blind Banker (9pm, UNC-TV) - If this is half as good as last week's premiere episode, I'll be happy. Tonight, Holmes and Watson investigate a bank break-in that resulted in nothing stolen, but strange graffiti left behind. But the case leads to the discovery of a dead banker inside his locked flat that the police, though not Holmes, suspect was a suicide. Meanwhile, Watson applies for a part-time job and goes on a date, but thanks to Holmes, the evening doesn't go as planned. 

Boardwalk Empire (9pm, HBO) - Nucky decides to renovate his childhood home after his father is injured in a fall, but the memories it dredges up are hard to handle. Also, a fellow veteran helps Jimmy get even with one of Charlie Sheridan's henchmen.

Dexter (9pm, Showtime) - Striving to bring some normalcy back into his life, Dexter figures the answer lies in finding a new serial killer to bring down. His quest gets thrown off course when his troubled new acquaintance (Julia Stiles) requires his help. For me personally, the jury is still out on this Julia Stiles storyline. Meanwhile, Quinn gets a tip about Dexter but isn't sure he can trust his source.

Brothers & Sisters (10pm, ABC) - When Kevin's relationship with Scotty is rocked by Scotty's admission of infidelity, the entire family is drawn into a dramatic confrontation. Also, Sarah and Jean Luc unveil their surprising news.

The Walking Dead (10pm, AMC) - A really superb new horror series from AMC that focuses on survivors in a world overrun by zombies. In this first episode, a sheriff's deputy (Andrew Lincoln, right) emerges from a coma to find flesh-eating "walkers" have taken over. With the help of a few living survivors, the lawman sets out to find his missing wife and son. It's remarkably well-done, but not for the squeamish. Here's more about how good -- and gross -- it is.

Luther (10pm, BBC America) - A young mother is abducted and Luther (Idris Elba) realizes it's the work of an occult writer who was suspected but never charged in the murder of another woman ten years earlier.