Police called it murder. A married Google executive and a high-priced call girl allegedly had an encounter in November on a Santa Cruz yacht that left the executive dead from a heroin overdose. But as the case came to light Wednesday and made national headlines, Santa Cruz County prosecutors charged the purported prostitute, Alix Catherine Tichelman of Folsom (Sacramento County), with manslaughter. The move suggested they don't believe they can prove an intent to kill, even though authorities say Tichelman was caught on video injecting her client with heroin, stepping over him as he fell unconscious, finishing a glass of wine, and closing the boat's blinds before slipping away.