Dennis Wojciechowski Home » Characters » Dennis Wojciechowski Dennis “Cisco” Wojciechowski is a private investigator who works for Mickey Haller. He is a romantic partner to Lorna Taylor, Mickey’s ex-wife. Appearances The Brass Verdict (2008) The Fifth Witness (2011) The Gods of Guilt (2013) The Crossing (2015) Two Kinds Of Truth (2017) Dark Sacred Night (2018) The Law of Innocence (2020) Resurrection Walk (2023) The Proving Ground (2025) Short Stories“Burnt Matches”