The science of solving crime — from Sherlock Holmes-era origins to modern molecular techniques. Crime scene investigation (securing, documenting, sketching), every kind of evidence (latent & visible fingerprints, DNA via PCR & STR profiling, bloodstain pattern analysis, ballistics & tool marks, fiber/hair/glass/paint trace evidence, gunshot residue), forensic chemistry & toxicology, drug identification, document examination & handwriting, forensic anthropology (skeletal remains, age & sex estimation), forensic odontology (dental records), forensic entomology (insects & time of death), forensic pathology & autopsy, criminal profiling (FBI BAU, geographic profiling), digital & cyber forensics, courtroom testimony & the CSI effect, the chain-of-custody, lab accreditation, famous cases (O.J. Simpson, JonBenét Ramsey, Golden State Killer, BTK, the Innocence Project), pioneers (Locard, Galton, Henry, Reiss), wrongful convictions, ethics & bias, careers, and the future (rapid DNA, AI in forensics, forensic genealogy). 45 units, 675 lessons.