Rookie Blue season 4

The fourth season of the Canadian police drama Rookie Blue starring Missy Peregrym, Ben Bass and Gregory Smith premiered on May 23, 2013 on Global in Canada.

Production
On June 26, 2012 ABC and Global announced that the show was renewed once again for a fourth season just three episodes into its previous season. On March 21, 2013 ABC and Global announced the season premiere would be May 23, 2013.

Priscilla Faia and Rachael Ancheril joined the main cast, whilst former main cast member Melanie Nicholls-King returned as a recurring guest star. Adam MacDonald and Eric Johnson continued to recur, whilst Aliyah O'Brien joined the guest cast as Holly Stewart. This was the first season not to feature Noam Jenkins, and the last to feature Lyriq Bent amongst the main cast.

Main cast

 * Missy Peregrym as Officer Andy McNally
 * Gregory Smith as Officer Dov Epstein
 * Enuka Okuma as Detective Traci Nash
 * Travis Milne as Officer Chris Diaz
 * Charlotte Sullivan as Officer Gail Peck
 * Peter Mooney as Officer Nick Collins
 * Matt Gordon as Officer Oliver Shaw
 * Lyriq Bent as Sergeant Frank Best
 * Priscilla Faia as Officer Chloe Price
 * Rachael Ancheril as Officer Marlo Cruz
 * Ben Bass as Detective Sam Swarek

Recurring

 * Eric Johnson as Detective Luke Callaghan
 * Melanie Nicholls-King as Officer Noelle Williams
 * Aliyah O'Brien as Dr. Holly Stewart

U.S. Nielsen ratings
The following is a table for the United States ratings, based on average total estimated viewers per episode, of Rookie Blue on ABC.