Hans: Book Two of the Grimm Trilogy

After the tragedy involving her home town of Grimsby, Dora and Jakob are transported back to the real world, where a chilling epidemic is sweeping New York City. Falling snow is creating a whirlwind of panic as snow-infected people begin to attack each other and grow more an more bloodthirsty. Dora and Jakob must figure out why the snowfall is causing waves of violence before the entire city is wiped out.

However, her efforts to figure out what is causing the disease is stalled when another cruel and ingenious author by the name of Hans Christian Anderson appears. He's heard of the elusive fictional character who wrote herself a new reality, and is hell bent on finding her. His characters prove worthy opponents, and Dora finds herself faced with even stronger enemies than the Brothers Grimm.

Disclaimer: I am not a NYT Bestseller, that is simply for a fun cover!