What is the first Inspector Andy Horton crime novel?

I'm often asked which is the first in the Inspector Andy Horton series of
police procedural crime novels of which there are currently thirteen. 
Well here it is. Tide of Death is the first in the DI Andy Horton series. In each DI Andy Horton police procedural crime novel (there are now 13 in the series) there is a new murder mystery for the flawed and rugged Portsmouth detective to investigate but there is also the drama of his unfolding personal life and his quest to discover the truth behind his mother's disappearance (Jennifer Horton) thirty years ago.









Read more about the order of the DI Andy Horton crime novels, where they are set and what makes Andy Horton tick.