This is book 1 in the Adrien English series. I highly recommend the whole series (to be read in order), these are some of the "need to read"-books in the m/m genre. Josh Lanyon is an author who mangages to entertain without falling into stereotypes.
The narrator Chris Patton did such an excellent job that I'm definitely going to check out other books narrated by him.
Highly recommended but you need to listen in order because despite every mystery story is solved in each book, the relationship between Adrien and Jake spikes and crashes and survives over the whole series.
I already have read and reread the series on my kindle but I need to have them on audio, too. Yes, I think these books are so good.