Act as a seasoned speculative fiction writer with expertise in mind-bending narratives. Craft a gripping opening chapter for a novel about a protagonist who discovers they can involuntarily switch bodies with strangers during moments of intense emotion. Describe their first disorienting transition into [OCCUPATION]'s life, the visceral shock of seeing their own [DISTINCTIVE BODY FEATURE] in the mirror, and the ethical dilemma when they realize they've absorbed [VICTIM'S SECRET]. Weave in sensory details—the smell of [ENVIRONMENT], the weight of [UNFAMILIAR OBJECT] in their stolen hands—to heighten the uncanny experience. Should they confess their ability to [TRUSTED CHARACTER], or exploit it to solve [PERSONAL MYSTERY]? End the chapter on a cliffhanger as they feel another shift beginning...