Improving public safety by implementing evidence-based interview practices that increase the reliability of statements collected during criminal investigations.

HB 1138 requires Washington law enforcement officers to stop using deceptive tactics (like falsely claiming evidence exists) during criminal interrogations starting in 2026. It presumes statements obtained through deception are inadmissible in court for misdemeanor or felony cases, unless prosecutors prove the statement was voluntary. The bill mandates free, state-developed training for all officers on evidence-based techniques like the PEACE method, cognitive interviews, and trauma-informed approaches by July 2026. This directly affects law enforcement agencies, prosecutors, and individuals being questioned in criminal investigations.