Who died on the last book of seekers Erin Hunter?

In the sixth and final book of the Seekers series by Erin Hunter, titled Return to the Wild, several characters passed away:

1. *Swiftpaw*: Dies while defending the pack from coyotes.

2. *Storm*: Succumbs to old age at a revered elder status within the pack at the very end of the novel.

3. *Umber*: Sacrifices itself in a heroic rescue maneuver to stop coyotes.