All in Dark Romance

The Mindf*ck Series by S.T. Abby

Serial killer Lana is busy avenging crimes from her own past when she chance-meets Logan, the righteous FBI profiler tasked with finding the killer. She is torn between finding justice (continuing the kills) and finding peace (a happily-ever-after with her agent) amid her conflict about whether a HEA is even possible should she allow Logan to find out the truth.