A task force headed up by Eduardo Dorrance (Nikita‘s Shane West) is sent into Gotham as part of a relief effort; Nygma turns to Penguin for answers.

Amelia and Koracick proceed with Catherine’s surgery; Richard encourages Meredith to visit her father (Scandal‘s Jeff Perry) before it’s too late.

Ben, Maddie and Ryn try to keep the newly arrived mermaid pack hidden from the rest of Bristol Cove; Elaine grows more suspicious of Helen.

The Discovery receives a surprise visitor who comes bearing shocking news about Spock; Tilly struggles to keep a grip on reality following the asteroid incident.

During exam week, Hope, Rafael, Landon and MG deal with the arrival of a new monster that feeds off of their greatest fears.

In Chelsea Peretti’s final episode as a series regular, Gina plays chess with Capt. Holt… attends brunch with Rosa and Amy… and infiltrates a posh club with Jake.

Shannon’s mom (Private Practice‘s Kate Walsh) undermines Clem and Nick after they specifically tell Shannon that she can’t attend a music festival. 

Benson and the team investigate a father’s murder and an attempted assault on his teenage daughters; Rollins goes into labor.

Ilana opens an outdoor workspace for smokers; Abbi stands up to her landlord when he refuses to fix her plumbing.