승률 10%의 생계형 변호사가 우연히 맡게 된 살인 사건에 휘말려 하루아침에 희대의 천재 사기꾼 '빅마우스(Big Mouse)'가 되어 살아남기 위해, 가족을 지키기 위해 거대한 음모로 얼룩진 특권층의 민낯을 파헤쳐 가는 이야기

계부를 죽인 친부의 누명을 벗기기 위해 진범을 찾는 형, 그리고 살해 증거인 '아다마스'를 찾는 동생. 둘이자 하나인, 쌍둥이 형제의 진실 추적기

Dark Minds brings together the sharp criminal minds of author and investigative journalist M. William Phelps and pre-eminent criminal profiler John Kelly to reopen unsolved homicides thought to be the work of serial killers. They are assisted in their efforts by a source known only to viewers as "13," a convict serving multiple life terms for a series of murders, who presents his theories about potential motivations behind these chilling cold cases based on his own experiences. They bring fresh eyes to unsolved serial killer investigations using the combined instincts of three unique perspectives, with hopes that it will encourage viewers to bring forward new leads.