As "Riverdale" dives deeper into its inaugural season, the mystery of Jughead Jones (Cole Sprouse) is being solved one puzzle piece at a time. In the Feb. 16 episode, "The Last Picture Show," a major piece fell into place with the introduction of Jug's dad.

F.P. Jones (Skeet Ulrich) has entered the picture -- and it's going to mean big things for our favorite whoopee cap-wearing loner. Not only is he a member of the Southside Serpents biker gang, but he's not living with his son. In fact, Jughead was crashing at the drive-in theater prior to its closing, and is now off to find a new place to live.

While there are still a number of questions about Jughead's home life and family -- Where's Jellybean? -- Sprouse promises we'll get some answers about his character's "Greek family tragedy." Given the shady dealings F.P. seems to be involved in, we can't really disagree with that assessment -- it seems like a tragedy in the making.

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"The relationship between Jughead and his father, after episode seven, kind of becomes one of the primary storylines of the latter half of the season," the actor says. "Jughead, in the beginning of the season -- intentionally, mind you -- is a character that's very much on the outside. He's in less of the episodes, and you sort of hear about him almost in whispers, and he appears in kind of vague little moments."

Once that turning point comes, Sprouse teases, "[Jughead's] life becomes one of the primary investigations of what's happening to the narrative of the town. The Southside, and the Serpents, become this setting of explainable villainy. It becomes an easily digestible scapegoat for people to go like, 'Oh, the Southside, of course it's them!' That gets played around with quite a bit -- and since Jughead's so involved within that side of this town, he ends up really taking a hit."

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Say it isn't so, Juggie! Alas, it looks like the investigator is going to become the investigated. What this means for his work with Betty (Lili Reinhart) on finding Jason Blossom's (Trevor Stines) killer remains a mystery, but it's good fans will get to see what Jughead's life, outside of his friends, is like.

Especially if it offers any insight into Jughead's relationship with Archie (KJ Apa) -- and what's keeping these two iconic friends so distant.

"Riverdale" airs Thursdays at 9 p.m. ET/PT on The CW.

Posted by:Chris E. Hayner

Chris E. Hayner is equal parts nerd, crazy person and coffee. He watches too much TV, knows more about pro wrestling than you do and remembers every single show from the TGIF lineup. You may have seen him as a pro-shark protester in "Sharknado 3." His eventual memoir will be called "You're Wrong, Here's Why..." TV words to live by: "I'm a firm believer that sometimes it's right to do the wrong thing."