Det. Tom Lange was an LAPD Robbery-Homicide Division detective and lead investigator who testified as a prosecution witness; he stated that he had nearly 27 years as an officer and had participated in approximately 250 to 300 homicide investigations. Across at least seven court days, Marcia Clark examined him on direct and redirect, while Johnnie Cochran cross-examined him about the investigation, crime-scene procedures, evidence collection, documentation, and chain of custody. Lange testified that the victims' hands were not bagged and that, according to his information, blood spots on Nicole Brown Simpson's back were not collected or examined at the coroner's office; questioning also addressed late or unbooked items, a glove moved before it was photographed without a written report, duplicate exhibit numbers, and eyeglasses chain-of-custody issues. He also testified that he observed blood at the Bundy rear gate on July 3 and had Dennis Fung take samples, while redirect included his single-assailant account, his testimony that there was no evidence of a second suspect, and testimony rebutting a drug-related-homicide theory.