Newly minted prison officer Nicholas Glass has fallen in with the wrong crowd at "The Hilton," a Scottish prison for violent offenders. The problem is, there's no right crowd. Bullied and abused by inmates and colleagues alike, Glass finds that each day is getting longer than the one before. When a group of cons use outside help to threaten his wife and daughter, he agrees to do them a 'favor'. But, as their threats escalate, and one favor leads to another, he grows ever closer to breaking point. And when Glass breaks, he shatters...

Slammer is a mile-a-minute thriller shot through with Guthrie's unique blend of dark humor and ultra-violent mayhem. His previous books have been lauded as "gripping noir" (Entertainment Weekly) and "character driven and exciting" (Cleveland Plain Dealer).