Midnight Society - The Black Lake #1-4 (2015) Complete

They transformed her into a monster killer, but she was already something else!
Forty years ago, England's greatest adventurers cast aside their friendship, making a choice that would come to haunt humanity. Now, secret agent Matilda Finn will face the consequences of that choice as she aids in a frantic rescue operation at Scotland's Loch Ness, where something terrible is waiting to draw her into the fight of her life!