The Door Behind Tiles

Elowen believes her husband Callum spends an hour in the bathroom each day because of stomach problems. Everything changes when her best friend Seren, a medical examiner, discovers a hidden passage and is murdered soon after. Elowen uncovers Callum’s secret underground laboratory, where he has conducted illegal human experiments for years and used accomplices to silence witnesses. Working with Detective Dorian, she helps expose Callum and his remaining associates, protects her daughter, and ultimately chooses to pursue forensic science in Seren’s memory.