If it’s a contest for who most deserves to finally go home after the world’s longest hospital shift in Max’s “The Pitt,” few have a better case to make than Dr. Cassie McKay.

Played by Fiona Dourif, McKay is a skilled, empathetic doctor whose personal drama has outmatched even that of her patients, culminating in this week’s 14th episode, aka “8:00 P.M.,” when she is arrested. But let’s back up.

Already this season, McKay has weathered a few crises, including the whispers about her court-mandated ankle monitor and the arrival of her deadbeat ex-husband Chad (Ron Heaps), who shattered a few bones playing the part of skateboarding dad for their son, Harrison (Henry Samiri). Add in the chaos of the mass casualty event, and McKay decides to call in reinforcements to rescue Harrison.

In this week’s episode, the cavalry arrives with the introduction of McKay’s dad,...