Yes, Wolfies a new spoiler for Teen Wolf season 4, episode 9 "Perishable" has revealed that the identity of The Benefactor will be revealed.
Executive producer Jeff Davis hinted that next week’s episode will reveal the identity of the Benefactor, “which is actually not as simple an answer as it might appear,” said Davis. “It brings up big questions answered in the final three episodes—events that go back to the very first season of Teen Wolf, with secrets revealed about what happened after the Hale fire.”
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