One subway death pulls Jack Reacher into his most dangerous conspiracy yet.

Anna Merrick is dead, a mysterious flash drive has disappeared, and powerful people are willing to kill anyone who discovers the truth.

What Reacher uncovers is Project Mongoose—a secret operation connected to a deadly chemical weapon capable of killing thousands.

Soon, Reacher becomes the hunted as police, assassins and two highly trained sisters close in from every direction.

Watch the complete Reacher Season 4 recap and ending explained to discover how one murder becomes a battle to stop an entire city from becoming the next target.

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