the ShadowCell

Detective Sergeant Amir Shah is about to become someone he despises.
To infiltrate a sophisticated terrorist cell inside HMP Barlinnie prison, the Muslim police officer must convincingly become Amir Hussain—a radicalized extremist planning mass murder. For six months, he'll share a cell with believers, attend study circles led by the charismatic Yousef al-Britani, and gather intelligence on a cyberattack that could kill hundreds.
But maintaining his cover requires more than just lies. When ordered to commit violence to prove his loyalty, Amir faces an impossible choice: cross a moral line he swore never to breach, or refuse and destroy the operation—and possibly himself.
In the gray space between right and wrong, between justice and betrayal, Amir must decide what he's willing to sacrifice to stop an attack. His principles. His identity. His soul.
Some darkness, once you walk into it, never fully lets you go.