The CW has released an official description for “Shifting Allegiances” which is the Thursday, April 26 episode of Arrow.
Here’s how they describe it, complete with some new spoilers.
RENE RETURNS TO NTA — Oliver (Stephen Amell) turns to an old friend to help battle Diaz (guest star Kirk Acevedo). Meanwhile, Rene (Rick Gonzalez) is out of the hospital but has a hard time re-adjusting to life as Wild Dog. Also, Lance (Paul Blackthorne) discovers something shocking about Black Siren (Katie Cassidy). Alexandra La Roche directed the episode written by Wendy Mericle & Rebecca Bellotto (#620). Original airdate 4/26/2018.