Lecturer by day, drug addict by night

Tan now gets plenty of invitations to share his journey of addiction and going to prison. Here he is giving a talk to students and staff of his former alma mater, Raffles Institution in Singapore. — Photos: HAROLD TAN

Listening to Harold Tan, 67, talk about his past is like reading a gripping novel with multiple climaxes.

The only difference is that his story – from a highflying corporate man to his shocking fall from grace due to drug addiction – is real, not fictional.