Former high school lab partners Marshall and Frances begin to unravel a conspiracy involving big pharma and the federal government to suppress knowledge of a rare mushroom that may hold the key to curing all the world’s diseases.
Common Side Effects (Season 1)
Pilot (Episode 1)
Writer: Joseph Bennett
Air date: 2025-02-02
Runtime: 22 min
Overview: Marshall meets his old high school classmate Frances and lets her in on a world-changing secret.
Lakeshore Limited (Episode 2)
Writer: Steve Hely
Air date: 2025-02-02
Runtime: 23 min
Overview: Marshall's forced on the run as the DEA pursues him.
Hildy (Episode 3)
Writer: Emma Barrie
Air date: 2025-02-09
Runtime: 23 min
Overview: Marshall visits an old mentor as new pressures mount.
Dumpsite (Episode 4)
Writer: Jean Kyoung Frazier
Air date: 2025-02-16
Runtime: 23 min
Overview: Frances tracks down Marshall in an unlikely location.
Star-Tel-Lite (Episode 5)
Writer: Dave King
Air date: 2025-02-23
Runtime: 22 min
Overview: Marshall, Frances, and their crazy neighbors deal with the aftermath of a dangerous incident.
In the System (Episode 6)
Writer: Jon Foor
Air date: 2025-03-02
Runtime: 23 min
Overview: Stuck in jail, Marshall faces new threats.
Blowfish (Episode 7)
Writer: Karey Dornetto
Air date: 2025-03-09
Runtime: 23 min
Overview: A chance encounter offers a risky opportunity for escape.
Amelia & Wyatt (Episode 8) 9.0
Writer: Daniel Schofield
Air date: 2025-03-16
Runtime: 22 min
Overview: Marshall and his new ally make a bold move.
Cliff's Edge (Episode 9) 10.0
Writer: Sophie Kriegel
Air date: 2025-03-23
Runtime: 23 min
Overview: Marshall's mushroom project grows out of hand.
Raid (Episode 10) 10.0
Writer: Steve Hely
Air date: 2025-03-30
Runtime: 23 min
Overview: Dangerous forces converge on Marshall's camp.

Seasons

Episodes 10