Five siblings from the Cassio family have leveled grave accusations against late singer Michael Jackson, alleging systematic abuse spanning 25 years.

Court documents filed in Los Angeles reveal Jackson first met family patriarch Dominic Cassio in 1984. Over time, he became a frequent visitor to their home, joined family events, and invited the children to his famed Neverland Ranch, according to Daily Mail.

Notably, eldest son Frank Cassio, once Jackson’s personal assistant, defended the singer in his 2011 book, My Friend Michael. However, after the documentary Leaving Neverland aired, all five siblings shifted their stance.

The lawsuit claims Jackson methodically “groomed, brainwashed, and manipulated” the children, making each feel “special” while allegedly building trust to exploit them.