Sandy Mitchell - Dead in the Water (Warhammer 40000) [Audiobook]

But when he is sent to a river-world, he must deal with a dangerous enemy, an enemy whose true identity remains unknown. As his vessel traverses the straits of the planet, Cain must uncover the face of this new foe so that he can understand and escape it. Caught in the enemy crossfire, the commissar has no place to run, and his nerve will be tested to the very limits.