Prosecutors said Chen had stabbed his boyfriend Eric Cooper, 29, more than 100 times in his face, neck and body before slitting the throat of their toddler son Cooper in the Seattle apartment they shared.
A hospital worker had gone to check on Chen in his apartment when he didn't turn up for work. The worker found him nude, holding a box for cover. He was dirty with dried blood, and his right eye was swollen shut.
What makes his case even more bizarre is the fact that his defence team tried to make an insanity plea, claiming that Chen was suffering from a build-up of dextromethorphan - a cough suppressant drug found in many over-the-counter cold medicines.
In large doses the drug can cause hallucinations, disassociation or detachment and - his lawyers argued- psychosis.
Due to Chen's Taiwanese heritage, they say the drug metabolized slowly, allowing for a build-up in his system.
Anyway, the jury did not believe the STORY and found him guilty of first- and second-degree murder with a maximum sentence of 49 years imprisonment.