Cusick will play what is considered by some the male lead on the show, a handsome, intense and brilliant litigator who works for Olivia.
Cusick started off as a recurring on Lost, landing a guest-starring Emmy nomination for his role as former Scottish solder Desmond Hume, before getting promoted to regular in Season 3 of the island drama.
Katie Lowes (The CW’s Easy Money) has also joined the Rhimes project, playing an ambitious and naive young lawyer recruited by Olivia to work for her. Lowes guest-starred in this season’s opener of Private Practice.
Elsewhere: My Boys co-star Kyle Howard has been tapped as the male lead in Smothered,an ABC multi-camera comedy pilot from Andrew Reich and Ted Cohen. The project centers on Zack (Howard) and Gillian, a young couple who find themselves smothered by their two very different sets of parents. Howard played one of the leads in the pilot for NBC’s Perfect Couples but had to pull out after the pilot was picked up to series because of his commitment to TBS’ My Boys.