Going Underground (Jonathan Roper Investigates, #1)

The alternate cover edition of this book can be found here.

BIG CITIES HIDE THE DIRTIEST SECRETS
Poking around in dark corners can be bad for your health. But Jonathan Roper has never let that sort of thing get in the way, and once he’s got the bit between his teeth there’s no stopping him - even when his own safety comes under threat. It makes him a wonderful detective and an impossible colleague.
Roper is autistic and finds it really hard to make friends, but he can pull together the oddest clues to make sense of the most complicated crimes. If one man can be said to understand him it’s Detective Chief Inspector, Brian Hooley, a veteran of Scotland Yard. Years on the job have given him a near bullet-proof armour-plating, and he’s going to need it. Working with Roper means he will have to withstand a barrage of bracingly direct personal comments. Despite this, the DCI is his biggest supporter because he knows Roper is the man you turn to when everyone else gives up.
"Going Underground is a page turning thriller that will keep you awake at night with its twists and turns that make it impossible to put down, and the richly observed characters will stay with you long after you finish." "Their remarkable relationship is highlighted by compelling dialogue and laugh out loud moments, making this more than just another cop story."