\'\'\'Spoilers-\'\'\' In the books, there is an AdaptedOut character named Jeyne Poole, who was one of Sansa\'s friends at Winterfell, and in one of the earlier books, Littlefinger comments that he will \
\\\'\\\'\\\'Spoilers-\\\'\\\'\\\' In the books, there is an AdaptedOut character named Jeyne Poole, who was one of Sansa\\\'s friends at Winterfell, and in one of the earlier books, Littlefinger comments that he will \\\"take care of her\\\". When she next appears, she has whip scars on her back and has been given to Ramsay Bolton (practically the dictionary definition of torture enthusiast) as part of a plot [[spoiler: in which she is made to pose as Arya]]. The implication is that the whip scars came from being \\\"trained\\\" in one of Littlefinger\\\'s brothels prior to that.
Also, it is indicated that Littlefinger provides \\\"boys\\\" for one nobleman who is [[AllGaysArePedophiles homosexual]]. It isn\\\'t clear if the guy is an ephebophile or a pedophile, but it sounds questionable.
On the other hand, in the books, we see Littlefinger\\\'s interaction with servants, and he is very pleasant to them, if condescending, so I would imagine that on the whole, to the extent he interacts with them, he comes across as a BenevolentBoss.
But yeah, book!Littlefinger has some involvement in selling people to extremely sick individuals/supplying prostitutes to sick individuals.
I will admit that I can\\\'t really see him making the kind of threats to his staff that the tv version does, but that\\\'s more an issue of being more personally pleasant (and not wanting to get his hands dirty) than being less evil (no question though, tv!Littlefinger is a way more unpleasant guy than his book counterpart).