Worried that he's not smart enough for Hayley, Jeff undergoes an experimental intelligence enhancement procedure at the CIA. Roger recruits Steve to help him harvest snake venom.
Stan becomes infatuated with a doll that the CIA wants to use to spy on the Russians.
Stan moves to Chicago to become a comic while Steve and Hayley host Roger for a nice night in.
Steve and Jeff try to bond as brothers while the rest of the family visits an escape room.
When the family goes to a dude ranch, Klaus and Rogu have to work together to survive in the wilderness.
Steve spins out about his future, but a radio show about new age mysticism gives him a hopeful new understanding of life. Roger struggles to get into the adult film industry.
After a series of boring personas, Roger goes to great lengths to prove to Francine he still has "his edge".
Stan tries a new, cutting edge parenting approach DNA splicing.
Roger reveals a secret passion to Klaus; Stan and Francine seek revenge on Bazooka Sharks management.
Stan's childhood imaginary friend returns to collect a debt. Klaus has a big date and needs a fishbowl upgrade.
Hayley searches for guidance and instead finds a community of 'cool butts.'
Stan is forced to partner with Jeff in a lumberjack competition; Steve, Francine and Snot enter a contest to win a vintage pickup truck.
Stan and Francine go back in time to settle an argument.
Francine and Roger get lost in a good book -- or five -- after Francine escapes an embarrassing situation; Stan reluctantly hangs out at the library.
Stan finally decides to do something about his secret baldness and enlists the help of Josay Bosay, Roger's famed hair-stylist-to-the-stars persona.
After Stan sells off the coveted family plot, the family opens their own cemetery in the backyard with the help of basketball Hall-of-Famer Scottie Pippen.
A new friendship causes Hayley to start worrying she might be slowly turning into Francine. Steve and his friends try out for Roger's improv troupe.
Hayley and Jeff help one of Roger's personas run a solar company.
Stan and the family go out to dinner at a buffet restaurant. Roger becomes a flower.
When Stan realizes he can't cry, he asks Steve to teach him empathy.
Stan gets in over his head trying to impress Toshi's dad; Klaus and Jeff head to the country for a weekend getaway.
When Principal Lewis threatens to cancel science club, Steve takes matters into his own hands in a monstrous way.
Watch American Dad! Season 18, Episode 17: The Sinister Fate!! online on FlixGems. A new friendship causes Hayley to start worrying she might be slowly turning into Francine. Steve and his friends try out for Roger's improv troupe.