Already in the throes of a viral pandemic, a massive polar vortex threatens to cover nearly all of Earth in ice. When it’s discovered the only chance of survival from the cold is a 100-mile temperate zone near the equator, a virologist, with the pandemic’s only cure, must reach the safe zone within 24 hours if humanity is to have any hope of survival.

Homicide detectives reveal how unique objects, often with an emotional connection to the victim, have provided vital clues in solving murder cases.