Investigative Genetic Genealogy (IGG) has opened up new frontiers in the search for the perpetrators of serious crimes. The pool of data held by consumer DNA databases has enabled law enforcement agencies to undertake database matching to find biological relatives of an unknown perpetrator. This relatively new forensic practice is not, however, without concerns when benchmarked against established norms of investigative practice and criminal procedure. The critical questions emerge: how should IGG be used and in what circumstances? In this article, we contend that the current laws in Australia are not capable of regulating IGG appropriately and legislative reform is required.