For months, Summer is trapped in a cellar with the man who took her and three other girls: Rose, Poppy, and Violet.

Eighteen-year-old twins Charlene and Max Perigard have grown up under the wealthy but tyrannical rule of their oil-tycoon grandfather. When Max disappears and a ransom note shows up, Charlene's world is shattered. Fearing the worst, she determines to find her brother before it's too late. Her quest hurls her into a twisted, frigid world of snow and ice ... and leads to terror in an isolated cabin. Together the twins struggle for survival while enduring...

"Buried alive in a coffin, Cal's chances of survival are running out as fast as the air around him. Thanks to his unknown attackers, he's lost the Jewel and the Riddle, and now his life hangs in the balance. Six feet under. Boges and Winter are frantically trying to find him before it's too late. Meanwhile, Gabbi--Cal's comatose little sister--has been kidnapped, and he is the prime suspect! Some seriously daring and dangerous tactics are need to...