Law & Order: Special Victims Unit: Season 10, Episode 5

Retro

When a baby is found with advanced AIDS, Detectives Benson and Stabler are called in to investigate why someone would let a baby go untreated for HIV. They are lead to a highly unethical doctor, Gideon Hutton (guest star Martin Mull) an AIDS denialist who believes and teaches that HIV doesn't cause AIDS and offers alternative treatments to cure HIV. They search for more families that have been influenced by Gideon and are lead to a particular family whose younger daughter died of AIDS and the mom and son are called into court along with Gideon.