As a pub cleaner at The Gleaming Goat you've had to scrub down a lot of blood-soaked floorboards and pull teeth out of table's steel seems, and you've managed to work that "talent" to your advantage.

You can permanently hide the murder weapon of the current investigation. When you find a body and the murder weapon is still in the room you can use your action to hide the murder weapon in your Duffel Bag of Holding, destroying it permanently. Regardless of when you place the weapon in your Duffel Bag it can't be found on your person if you are searched, and guests can only have knowledge of your Duffel Bag if they see you bag a weapon. You can use this trait again when you finish a Long Rest.  

Your mother became very sentimental with the death of your father and strove to preserve every aspect of her life from therein. You would help her taxidermy any pets she owned that died to keep them as a memento and help her cope. You've bent this skill into your vengeance of her death.

You can preserve a corpse, hiding its presence for a day from any guests normal investigation. Once this is done on a corpse, it can't be done on that corpse again. This action can only be used once per long rest. Once discovered, the body clearly displays your interference but does not label you by name.

Scrubbing plates seemed vastly different to scraping viscera off walls but when the gibbering mouthers were finished with your family the least you could do was to clean up after them, you couldn't leave your family like that. Thank Gods you had a late shift. 

You can perfectly clean yourself of any dirt or remains with an action.