Jason Butler Harner has joined the cast of Showtime's drama pilot Possible Side Effects, according to The Hollywood Reporter.
Meanwhile, two recurring players on It's Always Sunny in Philadelphia, David Hornsby and Artemis Pebdani, have been added to Fox's single-camera comedy pilot Boldly Going Nowhere, from the "It's Always Sunny" trio of Rob McElhenney, Charlie Day and Glenn Howerton.
Tim Robbins' Possible Side Effects revolves around the Hunt family, which runs a pharmaceutical firm.
Harner will play the middle son, Silas, peacekeeper and perhaps the only sane member of the clan.
Boldly Going Nowhere from 20th TV, is about what happens day-to-day on an intergalactic spaceship directed by the rogue Capt. Ron Teague (Ben Koldyke).
Hornsby will play Lt. Lance Grigsby, the captain's devoted right-hand man, who supports his most misguided orders while dealing with a cheating wife and a thieving brother-in-law back home.
Pantheon-repped Pebdani plays Startemis, the female alien communications officer.
Best of the Web
It's Always Sunny in Philadelphia Renewed for Two More Seasons
FXX has handed out a two-season renewal for the hit comedy series It's Always Sunny in Philadelphia, extending its run through Season 14.
Here's How It's Always Sunny Almost Killed Danny DeVito
Danny DeVito almost drowned on the set of It's Always Sunny in Philadelphia after being weighed down in a pool of water.
GIVEAWAY: Win It's Always Sunny in Philadelphia: The Complete Season Eight on DVD
The Paddy's Pub gang returns for another hilarious seasons of this hit FX comedy series, along with brand new special features.
It's Always Sunny in Philadelphia Season 7 and The League Season 3 Blu-ray and DVD Debut October 9th
Relive the latest seasons of both these FX comedy shows with these new Blu-ray and DVD sets out this fall.
It's Always Sunny in Philadelphia Valentine's Day Cards
Charlie, Frank, Mac, Dee, and Dennis have come together to offer their love and support on this upcoming lover's holiday.
It's Always Sunny in Philadelphia Episode 7.13 Promo
The Paddy's Pub gang gets revenge at their high school reunion in this Season 7 finale airing Thursday, December 15 at 10 PM ET on FX.