In 'The Trespasser,' Detective Antoinette Conway is battling discrimination and harassment within her own squad while investigating what seems to be a routine domestic murder. Partnered with Stephen Moran, who shares her sentiments of discontent, Antoinette is determined to not let the pressure crack her. However, as they dig deeper into the case of Aislinn Murray, who appeared as the perfect victim with a seemingly normal life, unsettling connections begin to surface. Antoinette recognizes the victim from her past, and what starts as a straightforward case spirals into a tangled web that challenges the detective's paranoia and resolve. Fighting against the tides of a biased force and confronting her own demons, Antoinette unravels the layers of Aislinn's life, proving that appearances can be fatally deceptive.