Shadow Hunters Season 01 Episode 10

Meliorn takes Clary and Jace to the Seelie realm where he reveals a portal to an alternate dimension. He tells Clary that if she locates another portal within this dimension, she will be transported to her father. However, when Clary arrives, she finds that Shadowhunters have ceased to exist in this peaceful world and may assimilate to Clary from that dimension. Jace and Meliorn protect the entrance to the dimension from demons, but when one slips through, Jace ventures in to stop it. With the help of Magnus, Clary finds the portal at the Institute, and she and Jace step through it. When they arrive at Valentine's hideout, they discover Jace's father, Michael Wayland, assumed to be dead at Valentine's hands, is being held captive there. In reality, Isabelle is arrested for the Meliorn mission, much to the anguish of Alec, who tries in vain to prevent her from being put on trial.