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*Bobby Brown won’t say his name, but he makes it clear in his upcoming “20/20” interview that he believes Nick Gordon was responsible for the death of his daughter Bobbi Kristina and her mother Whitney Houston, both of whom were found unresponsive in bathtubs.

“The same thing that happened to my daughter is what happened to Whitney,” he tells ABC News’ Robin Roberts. “There was only one person who was around on both occasions… I won’t say his name…He knows what happened. I don’t know what happened that night, but he does.”

Watch the “20/20” clip previewed on “GMA” below:

Brown’s “20/20” interview will air on Tuesday (June 7) at 10 p.m.