Belgian Betrayal by Elle James

On his first solo mission with Brotherhood Protectors International, former British SAS operative, Fearghas Gordon is attacked and left for dead, floating in a canal in Bruges, Belgium. He’s fished out by the Russian spy he’s tried so hard to forget.
In search of the truth about the murder of her family, Catya Romanov follows a trail of lies, deceit and cover-ups exposing the corruption of governments and people in power. The path of deception has led her to a picturesque town on the coast of Belgium and the man she reluctantly betrayed.
When she pulls Fearghas out of the water, she leads him into danger in her attempt to capture an MI6 agent gone rogue. She’s certain he might be the key to discovering who was behind her family’s extermination and why.