Survivants, cycle 2, tome 6
Erin Hunter2019

Storm has discovered the identity of the traitor dog who was sabotaging her former Pack—but when she returned from her exile, she fell right into the Bad Dog’s waiting trap. Now a prisoner in the Wild Pack’s camp, Storm is running out of time. This is her last chance to save the Pack… and to put an end to what the traitor began.

Titre original : The Final Battle (2019)