1. Ashley Zukerman
Character Charlie Isaacs. A hotshot young physicist newly hired and working under Dr. Ackley, Charlie admires and seeks approval from his boss’ foe, Frank Winter.
Where You Know Him From As 2nd Lieutenant Mac in The Pacific, though TV junkies may also recognize him as Lucas Taylor from Fox’s short-lived Terra Nova.
How Long It Probably Took You To Place Him 37 minutes
2. Rachel Brosnahan
Character Abby Isaacs. The wife of scientist Charlie, Abby is frankly not thrilled that her husband dragged their family out to the desert for a job he can’t talk about.
Where You Know Her From As call girl-turned-blackmailer Rachel Posner on House of Cards or as the substitute teacher with a secret agenda on The Blacklist.
How Long It Probably Took You To Place Him 5 minutes
3. Daniel Stern
Character Glen Babbit. He’s Frank’s friend and confidant, as well as part of his bomb-design team.
Where You Know Him From As bungling burglar Marv in the first two Home Alone movies or as the voice of grown-up Kevin Arnold on The Wonder Years.
How Long It Probably Took You To Place Him 13 minutes (he’s nearly unrecognizable with all that facial hair!)
4. John Benjamin Hickey
Character Frank Winter. The genius physicist, who leads an embattled group of scientists in a race to design the A-bomb, is ignored by the Los Alamos brass in favor of the clean-cut (but less innovative) Dr. Ackley.
Where You Know Him From As Sean Tolkey, Cathy’s oddball brother, on The Big C or as insufferable Internet gazillionaire Neil Gross on The Good Wife.
How Long It Probably Took You To Place Him 2 minutes
5. Olivia Williams
Character Liza Winter. Married to Frank, Liza’s a respected scientist — specifically a botanist — in her own right.
Where You Know Her From As Anna Crowe, Malcolm’s wife, in The Sixth Sense or as boss lady Adelle DeWitt on Joss Whedon’s Dollhouse.
How Long It Probably Took You To Place Him 6 minutes
6. Michael Chernus
Character Louis ”Fritz” Fedowitz. The good-natured goof is one of the scientists on Frank’s team.
Where You Know Him From As Cal Chapman, Piper’s hippie brother, on Orange Is the New Black or as Pastor Rick on The Big C.
How Long It Probably Took You To Place Him 15 minutes
7. Harry Lloyd
Character Paul Crosley. Another one of Frank’s underlings, he’s a smart-mouthed Englishman.
Where You Know Him From As Khaleesi’s scheming, skeezy brother Viserys Targaryen on Game of Thrones.
How Long It Probably Took You To Place Him 10 minutes
8. Christopher Denham
Character Jim Meeks. He’s also on Frank’s team — and he’s shaping up to be the Uptight One.
Where You Know Him From As American hostage Mark Lijek in the Oscar-winning film Argo.
How Long It Probably Took You To Place Him 22 minutes