CSI: Crime Scene Investigation (2000)

S1E13 Boom

An explosion rocks an office building, resulting in one fatality and numerous injuries. The prime suspect is a security guard who exited shortly before the blast and possesses expertise in explosives. Meanwhile, Nick finds himself assisting his friend, a sex worker. After succumbing to their mutual attraction, she is discovered dead the following morning, casting suspicion on Nick. Matters worsen as he learns that Ecklie is assigned to the investigation.