She's tough as nails when defending criminals. Can a simple test destroy her resolve? Defense lawyer Cass Leary believes wholeheartedly in justice for all. So when her deadbeat dad suddenly reappears begging for help, she throws her better judgment out the window. But Cass's family drama takes a back seat when a new client's desperate search for her birth parents flips from happy to horrifying. The adoption investigation hits a dead end, so Cass gives her client a simple at-home DNA kit. However, before she can act on the findings, the attorney's father gets arrested for a scandalous crime. And as Cass finally follows the trail from the ancestry test, she uncovers a gruesome family tree watered with decades of blood. Can Cass bring to light the shocking truth of two twisted cases?