From publisher blurb:
Mission: The secret agency known as Nachtrichter embarks on a perilous journey aboard a train bound for Budapest. This elite team of operatives aims to uncover the truth behind the mysterious disappearance of an ambassador's daughter. As the train hurtles through the majestic landscapes, the Nachtrichter agents become unwitting targets themselves. Betrayal looms, threatening to unravel their carefully crafted plans. When they finally arrive in Budapest, a city steeped in history and intrigue, the agents begin their search for the missing girl. But what they unearth is beyond their wildest imaginations. Now, faced with malevolent forces and unimaginable odds, the team must confront their deepest fears and unravel the enigmatic web of secrets that shroud Budapest.