GRIMM, Friday, 9 p.m., NBC

PAN AM, Tonight, 10 p.m., ABC

THE GOOD WIFE, Tonight, 9 p.m., CBS

GLEE, Tuesday, 8 p.m., Fox

Shannan Gilbert’s mom remembers.

Express Christmas

It’s a sunny day in December. The family’s hanging out, poolside, at Jay and Gloria’s (Ed O’Neill and Sofia Vergara) when it dawns on everyone that they won’t be together on Dec. 25. So they decide to celebrate Christmas that day. That day! Time to get busy. Mitchell (Jesse Tyler Ferguson), Alex (Ariel Winter) and Lily are in charge of getting the tree. Jay and Cameron (Eric Stonestreet) will wrap presents. Phil and Manny shop for groceries. Gloria and Luke (Nolan Gould) gather ornaments, and Claire (Julie Bowen) and Haley (Sarah Hyland) head to the mall for gifts. When they all return in the evening, it’s quite a sight.

MODERN FAMILY

Wednesday, 9 p.m., ABC

Walk on the wild side

Nick (David Giuntoli) is called to a suspected arson case, which exposes a long-standing family feud that brings Monroe (Silas Weir Mitchell, left) face to face with characters from his troubled past. While Monroe wrestles with restraining his wild side, it’s up to Nick to keep everything from going up in flames. Russell Hornsby, Bitsie Tulloch, Sasha Roiz and Reggie Lee also star in the NBC fantasy drama that has been picked up for the entire season.

GRIMM

Friday, 9 p.m., NBC

Fasten your seat belts

It’s the final weeks for this high-flying, low-rated series. While in London, Ted (Michael Mosley, below center) enlists Laura’s (Margot Robbie, below right) help to try to make an old flame — Amanda Mason — jealous, but things don’t go the way he expects. Meanwhile, Kate (Kelli Garner, below left) attempts to regain her freedom from her courier duties by agreeing to one last mission for her British contact, but the assignment puts her life in jeopardy. Maggie (Christina Ricci) butts heads with a congressman who disagrees with her political views, but things really heat up when she tries to change his mind about his beliefs and ends up becoming attracted to him. Back at home, Dean (Mike Vogel) takes Colette (Karine Vanasse) to meet his parents, and the two discover feelings that have been brewing for a long time.

PAN AM

Tonight, 10 p.m., ABC

Old acquaintance

A routine arbitration turns into a battle of wills between Alicia (Julianna Margulies) and Louis Canning (Michael J. Fox), but the pair make an unexpected connection when Alicia’s daughter, Grace (Makenzie Vega), gets into the car of a total stranger. Weepy Alicia must call on her soon-to-be ex (Chris Noth) for intervention. With Christine Baranski and Josh Charles.

THE GOOD WIFE

Tonight, 9 p.m., CBS

Changing Chord

In an attempt to recruit a few more members, Finn (Cory Monteith) tracks down former teammate Sam Evans (Chord Overstreet, above) and convinces him to come back to the glee club. Tina (Jenna Ushkowitz) comes to the defense of Harry and encourages him to pursue his dream while McKinley High prepares to host the big sectionals performance. With Matthew Morrison, Jane Lynch and Lea Michele.

GLEE

Tuesday, 8 p.m., Fox

Bodies at the beach

If you ever needed a reason not to go to Long Island, this is it: There’s a serial killer on the loose. In May 2010, a 24-year-old prostitute, Shannan Gilbert, vanished into thin air. Seven months later, police found the remains of a woman’s body along a desolate beach road. Nine more bodies showed up. Four were sex workers, and they were all wrapped in burlap. “The Long Island Serial Killer” documents the search for Gilbert’s body. Suffolk County Police Commissioner Richard Dormer speaks about the investigation, as do relatives of the murder victims.

THE LONG ISLAND SERIAL KILLER

Monday, 9 p.m., A&E