In 'Main Range 236 - Serpent in the Silver Mask (Doctor Who Main Range)', written by David Llewellyn and featuring the Fifth Doctor and his companions, the TARDIS lands in a luxurious hotel where guests are disappearing one by one. As the Doctor investigates, he uncovers a sinister plot involving a mysterious figure known as the Silver Serpent. This gripping sci-fi adventure explores themes of deception, power, and the consequences of greed. With its engaging storyline and well-crafted characters, this audio drama is a must-listen for fans of the Doctor Who series.