Ashanti Bromfield

A noise complaint leads Andy and Swarek to an illegal warehouse party, and to an injured John Doe -- a homeless squatter who's been stabbed in the warehouse. While Gail and Dov detain the partygoers for questioning, Andy and Swarek apprehend a surprising witness -- Oliver's 15-year old daughter, Izzy. And Izzy's involvement in the crime nearly pushes Oliver over the edge -- as a father and as a cop.

The Strategic Response Unit is called when a mother and daughter are abducted, and the only clue they have about the culprit could expose a dark family secret.

After going MIA during the middle of her world tour, mega-star Josie McCoy (guest star Ashleigh Murray) returns to Riverdale unexpectedly. But it’s not until she reunites with her former bandmates Valerie (guest star Hayley Law) and Melody (guest star Asha Bromfield), that she opens up about the real reason why she’s back. Elsewhere, Veronica (Camila Mendes) gets creative after a surprise visit from her old friend Alexandra Cabot (guest star Camille Hyde). Finally, Toni (Vanessa Morgan) steps in to help Tabitha (Erinn Westbrook) and Veronica land a deal. KJ Apa, Lili Reinhart, Cole Sprouse, Madelaine Petsch, Mark Consuelos, Casey Cott and Drew Ray Tanner also star.