Tuesday night on 20/20, a distraught Bobby Brown sat for an interview with ABC News’ Robin Roberts, blaming the deaths of his pop superstar ex-wife Whitney Houston and their 22-year-old daughter Bobbi Kristina on one culprit: Nick Gordon.

“When he married the most celebrated singer in the world at the time, pop princess Whitney Houston, he began a life under a microscope. The couple’s every move was tracked, and jaw-dropping stories were told about drug addiction, physical violence, and worse, with Brown always cast as the villain. Forever branded, Brown was trapped in a spiral of rage against the media and drug addiction, fighting for the will to get himself clean and keep his family together.”

There’s no question Brown has suffered greatly, or that the deaths of Houston and Bobbi Kristina were exacerbated by the pressures of fame, addiction, and, some might argue, the toxicity of reality television that the entire family was swept up in.

On Facebook Sunday, Brown’s sister Leolah Brown claimed that Houston and Bobbi Kristina were targets of a conspiracy that has Bobby in its sights next.

“Way too much is going on in the conspiracy and cover up of my sister and niece’s murder! AND NOW THEY ARE CONSPIRING TO COME FOR MY BROTHER BOBBY!” wrote Leolah Brown, who previously shared her Brown family conspiracy theories to TMZ. In particular, she’s long blamed Whitney’s sister Pat Houston for forcing Bobbi Kristina, who’d appeared with her parents on Being Bobby Brown, to star in reality show The Houstons: On Our Own too soon after Whitney’s death.

Pat Houston, who runs her late sister’s estate-and alongside Cissy Houston, is being sued by Bobbi Kristina’s estate-drew intense criticism this week for putting over one hundred items belonging to Whitney up for auction, including her Whitney, I’m Your Baby Tonight, and The Bodyguard-era passport, several awards, and the Marc Bouwer-designed wedding gown she married Brown in circa 1992.

Bobby Brown