The Detective and The Killer

During the war against Mevolent, Katie North fell in love with a man named Skulduggery Pleasant. But one day, during a mission, Katie was captured and took away from Skulduggery by Mevolent, who experimented on her.

Finally, after centuries of being a killing machine, Katie is caught by the Irish Sanctuary where she finds out that Skulduggery pleasant,the man that her boss Serpine hates,is a skeleton detective.

Skulduggery realizes that his old lover doesn't remember him or the love they shared, and he feels heartbroken. He lost his lover during the war and then lost his wife and child. He really isn't lucky with love, it seems