To take a crime from scene to court may involve several specialized branches of forensic science. Criminalistics specialists look at statistics, splash patterns, fingerprints and distribution of material at the scene; forensic chemistry deals with fires, explosives, glass, paint and soil analysis; toxicology looks at poisons and drug abuse; serology is the science of body fluids including blood, saliva and semen; the documents unit look at fakes and forgeries; and the computer branch investigate hacking and electronically detectable crimes.