On Fourth of July weekend in 2005, police arrived at the Franklin, Tenn., apartment of Lesa Buchanan and were surprised by what they found: a cache of prescription drugs and sex toys. Lesa's boyfriend, Dr. Christ Koulis, told police they had spent most of the weekend in her bedroom having sex. Koulis, a plastic surgeon, had called 911 when she stopped breathing, and said he performed CPR, but that there was no pulse. At her apartment, detectives discovered used syringes with traces of oxycodone, a powerful narcotic available only from a prescribing physician. “48 Hours" correspondent Troy Roberts reports. This classic "48 Hours" episode last aired on 8/21/2010. Watch all-new episodes of “48 Hours” on Saturdays, and stream on demand on Paramount+.