But when cops asked Seattle doctor Louis Chao Chen, 39, who had committed the brutal crime, his answer shocked them.
"I did," he said, according to court documents.
A naked Chen was discovered by a co-worker at the city's Virginia Mason Hospital who'd gone round after staff had become concerned when he hadn't shown up for an orientation session.
After they called 911, police rushed to the apartment at 910 8th Avenue, where they found the doctor's 29-year-old partner and their adopted 2-year-old son stabbed to death.
Seattle Police spokesman Sean Whitcomb said officers described the scene as "horrific" to KOMO News. Chen was suffering from two stab wounds and was taken to Harborview Medical Center where is expected to recover.
According to records Chen had just moved to Seattle with his partner and son from Durham, N.C., where he had just wrapped up a residency studying endocrinology at Duke University.
On his release he is expected to be booked into jail for investigation of aggravated murder.