A text message from beyond the grave puts the Ravens on edge. Neckbone uses extreme methods to pressure the Ravens into revealing Sleep’s fate. The line between friend and enemy begins to blur for Byrd. Karen Beach’s affair with Viper Sam Foster complicates the Ravens’ lives in unexpected ways.

Beach’s entanglement with Foster grows more dangerous by the day. After a shocking massacre of innocents, Agent Price pressures the Ravens to track the source of WMD, a dangerous new street drug. Neckbone puts his own screws to the gang to uncover this new threat to his business.

After Hammond and Cole’s worst fears are realized, their search for Neckbone escalates. Byrd pursues WMD’s shady connections with big pharma, but gets no help from the Bureau. Agent Price confronts Tom in an effort to flip him. Foster reveals to Beach explosive evidence he stole off Winters.

When Hammond and crew track Neckbone to his hideout, a shocking scene awaits. Just as the Ravens find themselves beset on all sides, yet another enemy comes back to bite them. Foster’s play against pharma CEO Shankman backfires. With their back against the wall, the gang must fight for their lives.

The Feds descend hard on the Ravens. Hammond is ready to sacrifice himself, but Beach has an ace up her sleeve. Hammond strikes a deal with Agent Price in order to save his crew, but the deal is not what it appears. The Ravens finally square off with Neckbone.