dumbfounded. i remember reaching out to other colleagues and friends and trying to learn what had happened. >> i always thought of him as a surprisingly approachable, normal person. just a single guy in new york looking to hang out with friends who happens to be responsible for this company. and just, you know, it makes you realize he was carrying a huge secret around in plain sight. >> new york police found him unconscious in his bed, and they suspect a drug overdose as the cause of death. >> i never in my wildest imagination could have ever guessed that colin was doing heroin. colin died of a heroin overdose because there was fentanyl in it.