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.

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.

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 past, her relationships with…

Summer vacation. Mika is overjoyed to see Windstorm again. But then she discovers strange wounds on the belly of Windstorm, for which no one has an explanation. Yet this is…

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 and romance as Gwen finally uncovers…

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.

Stella, grows up in Berlin during the rule of the Nazi regime. She dreams of a career as a jazz singer, despite all the repressive measures she is forced to…