the firsthappened at 1:40 this morning, a 53 year old man was shot in the foot on connecticut street.ss than two hours later and a block away, a 49 year old man was stabbed three times. police say the incidents do not appear to be connected. >> san francisco police are turning to the public tonight for help in soling a cold case homicide. david, you have new video that appears to show the victim with with her killer just before the attack. >> gasia that's right and investigators released this video because they say the trail has gone cold. san franciscopolice say these are scenes from before and after a homicide. surveillance video shot last october 21st show alee i can't cruz walking to a her apartment with a man. less than an hour later, he is seen bolting down the sidewalk. cruz was later found stabbed to death in her r apartment. >> we're hoping someone might see this video and recognize the suspect police released the video and this sketch o' of a man resembling the suspect described aas a mixed race male between 26 and 32 years old with braids or a pony tail on the side of his h