S5, E22: Christina Nerrit (Karen Young) is left for dead in her apartment, a plastic bag over her head and her hands cuffed, but survives. At the hospital, she asks her sister, Allison (Annie Campbell), to bring her laptop computer. Initially, Benson (Mariska Hargitay) and Stabler (Chris Meloni) think her married boss was the culprit, since he was seen leaving her apartment. But urine tested from her bathroom indicated the victim or perp is a female, suffering from kidney failure. Meanwhile, Christina dies from an insulin overdose while in the hospital. When they check her computer, they discover she was suicidal. She had been on a website for suicidal people and the ""conductor"" was encouraging her to do it. The ""conductor"" is Amy Solwey (Marlee Matlin), a deaf embryologist. She comes in for questioning and technically, because she didn't commit a crime, is released.