Researchers have identified a new pathological mechanism for a familial type of Parkinson's disease caused by a mutation in the CHCHD2 gene. Mutant CHCHD2 protein is mislocalized in cells and leads to alpha-synuclein protein aggregates via interactions with another protein, known as Csnk1e/d. These findings indicate that Csnk1e/d inhibition may slow or halt Parkinson's disease development in patients with CHCHD2 mutations, providing new hope for affected families.