The Santa Cruz Sentinel reported Tuesday that surveillance video from the boat shows 51-year-old Forrest Timothy Hayes losing consciousness.
Investigators say the suspect, Alix Catherine Tichelman, makes no effort to help him and instead gathers her belongings and even gulps a glass of wine before leaving. Hayes' body was discovered the next day.
The 26-year-old from Georgia was taken into custody last week after being lured back to Santa Cruz County in a prostitution sting.
She faces charges including second-degree murder.
Police say Tichelman provided heroin for Hayes, a Google executive, while they were aboard the 50-foot yacht.
Information from: Santa Cruz Sentinel, http://www.santacruzsentinel.com
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