Willem Mulder was born in Utrecht, Netherlands, grew up on the streets of Ondiep in Holland. Being his own boss for 35 years trading physiotherapy equipment he spends now more time for his favorite hobby and passion since his childhood, writing books and columns. Humor has a prominent place in his books and the most often comment he gets is that his books are easy to read, exciting and with laughter.

His first book “Dirty Money” in 2013 was based on a true story when his credit-card was hacked and was used for gambling on websites. This detective-story was Thriller of the Month June 2014 on bol.com in The Netherlands. 

His second book (2014) was a non-fiction roman ”Utrecht van Toen" street-stories of the years 50-60. Humor and adventure told and saw true the eyes of a kid in the years 1950-60. The book got a place in a local museum and in several libraries. 

In 2017 came “The Temple of Greed. It starts in the Vatican by controlling the books an invoice showed up about a shipment of gold. But the cargo is still missing. This is the beginning of a chase true Europe and ends on the canals of Utrecht in the Netherlands. This book was nominated for the Indie-Award 2017 in the Netherlands and got a place in several public libraries.