Orphan Black has added Shameless star Justin Chatwin (pictured) and True Blood's James Frain to its cast for the show's upcoming third season.

Chatwin's recurring role is described as a drug-dealer posing as a charismatic businessman "with rugged good looks and street smarts," according to a press release from BBC America.

Frain's guest appearance will be as Ferdinand, a secretive and "well-educated 'cleaner' who is both charming and intimidating ... with questionable ethics."

Additionally, Black Swan's Ksenia Solo has joined the cast as Shay, "a soulful and compassionate holistic healer with a great sense of humor" who befriends Cosima (Tatiana Maslany). Kyra Harper of Warehouse 13 will play Dr. Coady, "a ruthless doctor and advisor to the military."

The third season of Orphan Black, which stars Maslany as multiple clones, is expected to premiere next spring.