Dexter | 9pm on Showtime

Brother Sam, a minister with a criminal history, is brought in by the homicide department to help solve a macabre murder, but Dexter sees him for what he really is—and it’s definitely not a man of God.

Hung | 10:00pm on HBO

Season 3 Premiere: Jump on the Thomas Jane train…or the Jason train. Looks like our favorite male performer has got some younger competition to contend with.

Saturday Night Live | 11:30pm on NBC

Recent Emmy winner Melissa McCarthy (“Mike & Molly,” “Bridesmaids”) hosts; Musical guest is Lady Antebellum.

Supernatural | 9pm on The CW

Castiel continues to struggle with the burdens that come with his new-fangled power; The broken wall in Sam’s head causes him to have hallucinations; Bobby worries that Dean is beginning to stumble under the weight of fighting Castiel and keeping an eye on Sam.

Parenthood | 10pm on NBC

Amber enjoys her new independence while Sarah strives to remain a part of her life; Crosby is unsure how he feels about Jasmine dating and she wonders if she still fits in the Braverman family; Kristina is concerned about Crosby and Adam’s new business venture; Alex receives good news.

Mike & Molly | 9:30pm on CBS

Season Premiere: After their engagement, trouble arises when Molly wants to start planning their wedding festivities, while Mike just wants to go fishing with the guys.

The Good Wife | 9pm on CBS

Season Premiere: While the staff at Lockhart/Gardner adjusts to new realities and relationships, Alicia must put aside distractions in her personal life to defend a Muslim student accused of murdering a Jewish classmate.

Castle | 10pm on ABC

Season 4 Premiere: Detective Beckett fights for her life as Castle, plagued by guilt over his role in the events, struggles to uncover who’s behind her brutal shooting; Back at the precinct, Ryan and Esposito have to adjust, as Victoria “Iron” Gates becomes their new uncompromising Captain.

The Secret Circle | 9pm on The CW

Series Premiere: After her mother dies in a mysterious accident, Cassie Blake moves to a small town to live with her grandmother; after a series of strange and dangerous events, Cassie’s new friends reveal a secret.

Melissa & Joey | 8pm on ABC Family

Season Finale: Mel has a difficult time discussing teenage pressures with Lennox; Joe finds himself coming into some money, so he quits his “manny” job.

The Big C | 10:30pm on Showtime

Lee and Dr. Sherman propel Cathy to a major crossroads; Adam tries to find his uncle who has gone missing.

Entourage | 10:30pm on HBO

Series Finale: Has Vince found “the one”?! Will E, Sloan and their spawn live happily ever after?! Do Ari and Dana Gordon end up together?!

Portraits from Ground Zero | 10pm on A&E

A photographer with unprecedented access to the rescue and recovery operations at Ground Zero tracks down the people in her best pictures and gets them to tell the riveting personal stories behind the photos.

Whisker Wars | 11pm on IFC

The team competes in the Motor City Beard and Mustache Championships in Detroit.

Louie | 10:30pm on FX

Season Finale: This last ep involves the airport and New Jersey, so you know Louie will be even more miserable than usual.