A deadly plague threatens the town; racial tensions rise when the Irathients, who are immune to the virus, are quarantined.

Journalist Bill O'Reilly; from "Frances Ha", actress Greta Gerwig; musical guests Quadron.

A complex murder-suicide case has the department reeling. Meanwhile, when Rusty receives a mysterious and threatening letter Emma demands that he be relocated. Torn between her desire to protect Rusty and professional duty to the case, Raydor is forced to seriously consider Emma’s request.

Tensions escalate at work between Savi and Dom; Joss's new boss Olivier -- very French and very unimpressed with her -- gives her an impossible assignment; and Karen continues to be drawn into the dysfunctional Grey family orbit.

Mordecai tries to shake hands with Margaret's father.

The Fosters cope with a crowded house but when Mike suggests that Brandon come live with him, Stef argues that it's not Brandon's decision, resulting in a heated argument with her son. Meanwhile, Lexi and Jesus resolve to end their budding relationship but find that their attraction to one another may be too hard to resist. Callie openly disapproves of Mariana letting Jesus take the fall for stealing his pills but when Timothy, Callie's teacher, gives her an assignment to write about guilt in a journal, it drudges up her own dark secrets and a mysterious name from her past.

The death of a male stripper forces Jim to seek out Florida's purveyors of flesh and the women that love them.

TV personality Carson Kressley; from "Under the Dome", actress Rachelle Lefevre.

The coaches perform and the three remaining artists go all out.