Lafayette Police say hard work and determination is the secret behind the department's high rate of success with solving murders. Records and case files going back several years indicate the LPD has a 90% closure rate on homicides. Investigators say it's not their style to grow complacent and let a case grow cold. Detectives have been known to work 24 - 36 hours straight during the earliest phases of a murder case, which they say is crucial to catching the killer.