Nobody's Hero by M W Craven; 2024. Hardcover.

When a shocking murder and abduction on the streets of London leads investigators to him, Ben Koenig has no idea at first why the highest echelons of the CIA would need his help. But then he realises he knows the woman who carried out the killings. Ten years earlier, without being told why, he was tasked with helping her disappear. Far from being a deranged killer, she is the gatekeeper of a secret that could take down the West, so for years she has been in hiding. Until now. And if she has resurfaced, the danger may be closer and more terrifying than anyone can imagine. So Ben Koenig has to find her before it's too late.

But Ben suffers from a syndrome which means he can't feel fear. He doesn't always know when he should walk away, or when he's leading others into danger.