Frank faces near-certain death due to liver failure, forcing him to seek out a donor from his past.
: Ian returns after going AWOL, exhibiting erratic and hyper-sexualized behavior that the family eventually identifies as bipolar disorder, mirroring their mother Monica. Shameless - Season 4
Season 4 introduces one of the show's most acclaimed storylines: the development of Ian and Mickey's relationship. Frank faces near-certain death due to liver failure,