@XiphonicKiiros' face seemed to light up at the question as if somebody actually giving a crap about his interests is the best thing to have ever happened to him.
"Oooh, I LOVE mystery! It's my favourite genre!" He never read books very often, at least not ones of stories. He preferred books that contained information, not some emotional adventure with the cliché happy ending. Despite that, he simply couldn't resist a good mystery book, it's a guilty pleasure of his.
"Agatha Christie is my favourite author! I thoroughly enjoy reading the many mysteries she's written starring Hercule Poirot. He's my favourite fictional detective and an amazingly good one at that, you never know what he's thinking or how he figures out those murders." He was beginning to ramble and was surprisingly really into this subject.
"My most favourite of her stories is Murder on The Orient Express, it was also the first of her books I've read. It's a terrible shame she's passed away now. Fortunately there's more of Poirot's adventures in a TV Series. I watched it all the time back in Galevein, I just can't get enough of how amazing she was with her characters personalies an-" He slowed to a halt when he realized he's been running his mouth off.
"...I uh... I'll shut up now. Perhaps I've tortured you all enough with the sound of my voice for one day, heheh." 
