Much of The Walking Dead Season 10 has revolved around spies and traitors within the rival survivor factions of Alexandria and the Whisperers, and the potential for betrayal appears only to be heightened as the series enters its second half.

AMC has released a new trailer heralding the survival horror series' midseason return, with Negan alerting the Whisperer leader Alpha that they have a spy among them as the conflict with Alexandria intensifies.

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Negan escaped to Whisperer territory in the first half of Season 10, after years of imprisonment within Alexandria for leading his violent faction the Saviors against other communities. Discovered by Beta, Negan has since formed an uneasy alliance with Alpha.

As Daryl comforts Carol ahead of the renewed conflict against the Whisperers, it appears the long-simmering war between the communities will finally come to a head when the AMC series returns.

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The Walking Dead stars Norman Reedus, Danai Gurira, Melissa McBride, Josh McDermitt, Christian Serratos, Jeffrey Dean Morgan, Seth Gilliam, Ross Marquand, Khary Payton, Cooper Andrews, Avi Nash and Samantha Morton. The midseason premiere will air Sunday, Feb. 23 at 9 p.m. ET/PT on AMC.