Tuesday on TV: Bill Paxton joins improving 'Agents of S.H.I.E.L.D.'

We're assured by the producers writers and cast that we're just getting to the good parts of Marvel's Agents of S.H.I.E.L.D. (7 p.m., ABC/Ch. 4). The jury remains out on that one, although the most recent original episode — which aired way back on Feb. 14 — was, arguably, the best we've seen from this series.

It wasn't great, but it was good.

In tonight's episode, Bill Paxton makes the first of several appearances as Agent John Garrett. Comic book fans will recognize the character; the rest of you will recognize Paxton.

Elsewhere on TV ...

NCIS (7 p.m., CBS/Ch. 2): DiNozzo confronts a man impersonating a Navy officer.

The Voice (7 p.m., NBC/Ch. 5): The blind auditions continue.

Glee (7 p.m., Fox/Ch. 13): Elliot (Adam Lambert) gets caught in the middle of Santana and Rachel's feud.

The Originals (7 p.m., CW/Ch. 30): Klaus recalls events back in 1919.

Rizzoli & Isles (7 and 9 p.m., TNT): Jane's father has some shocking news.

NCIS: Los Angeles (8 p.m., CBS/Ch. 2): Thre's an explosion at a fish market.

The Goldbergs (8 p.m., ABC/Ch. 4): Adam leads a search for missing family jewelry.

About a Boy (8 p.m., NBC/Ch. 5): Will agress to babysit Marcus, and then takes him to a party.

New Girl (8 p.m., Fox/Ch. 13): Jess moves into Nick's bedroom.

Supernatural (8 p.m., CW/Ch. 30): A photograph of a dead teenager reveals a ghostly figure in the background.

Cougar Town (8 p.m., TBS): Grayson doesn't think much of Travis' new hipster friends.

Perception (8 and 10 p.m., TNT): Lewicki question's Pierce's loyalty.

Trophy Wife (8:30 p.m., ABC/Ch. 4): It's Bert's birthday.

Growing Up Fisher (8:30 p.m., NBC/Ch. 5): Mel has to reveal his blindness to a client.

Brooklyn Nine-Nine (8:30 p.m., Fox/Ch. 13): All the precincts compete in a mandatory training course.

Person of Interest (9 p.m., CBS/Ch. 2): We learn more about what Finch's operation was like before Reese joined — and it's tied to a current case.

Mind Games (9 p.m., ABC/Ch. 4): An executive at a consulting firm hires the team when she's passed over for promotion.

Chicago Fire (9 p.m., NBC/Ch. 5): Fire breaks out in a 20-story building.

Pretty Little Liars (9 and 11 p.m., ABC Family): Hanna learns of a possible new lead.

Twisted (10 p.m., ABC Family): Jo confronts Tess.

Justified (11 p.m., FX): Raylan goes after Crowe.