Jannis Niewöhner

Hagen von Tronje, the Burgundian master-at-arms, holds his troubled kingdom together while hiding his dark past. The arrival of the unpredictable drag...

At the tense 1938 Munich Conference, former friends who now work for opposing governments become reluctant spies racing to expose a Nazi secret.

A young lawyer stumbles upon a vast conspiracy while investigating a brutal murder case.

A mute man with a violent past is forced to take on the teeming underworld of a near-future Berlin as he searches for his missing girlfriend.

Emerald Green is the stunning conclusion to Kerstin Gier's Ruby Red Trilogy, picking up where Sapphire Blue left off, reaching new heights of intrigue...

Gwen has just discovered, that she's the final member of the secret time-traveling Circle of Twelve. Now she has to juggle with constant trips to the ...

On her 16th birthday, Gwendolyn Shepherd finds out that instead of her cousin, she has inherited a rare gene that allows her to travel through time.