: To prove his commitment to Ian, Mickey publicly comes out as gay during a bar brawl at the Alibi Room, marking a massive departure from his previously repressed, violent persona. Frank’s Mortality and the Arrival of Sammi
: Fiona is arrested for child endangerment, faces imprisonment, and is forced to confront that she has inherited the same "Frank-like" tendencies she once despised. Lip’s Evolution and Responsibility Shameless - Season 4
Frank faces near-certain death due to liver failure, forcing him to seek out a donor from his past. : To prove his commitment to Ian, Mickey