Legends 9 p.m., TNT
Sean Bean, head reattached, is the charismatic star of this series about an FBI agent who has a habit of going a little too deeply undercover. He’s great, the rest of the show not so much. Instead of treating the drama like a fascinating character study of a man with identity issues, the writers focus too heavily on the crimes of the week.
The Knick 8 and 9 p.m., Cinemax
In case you want to play catch-up on this show, Cinemax is reairing the first two episodes. I feel obliged to warn viewers that, because it’s set in a Manhattan hospital in 1900, “The Knick” features primitive surgery scenes with lots of blood. And guts, too. But if you can take it, you’re in for a promising drama about race, medical invention, the toll of grief, drug addiction, and sexism. Clive Owen has found his best role in years, and Steven Soderbergh’s direction is artful and intimate.
The Divide 9 p.m., WE
Across the great.
Graceland 10 p.m., USA
There’s some part of me wants to see.
Sledgehammer 10 p.m., DIY
This will be my testimony.Matthew Gilbert can be reached at firstname.lastname@example.org. Follow him on Twitter @MatthewGilbert.