Kenzi mentions the book '50 Shades of Grey' while talking to the 'Book Club', Rachel Skarsten who plays Tamsin appeared in the movie adaption, Fifty Shades of Grey (2015) as Andrea.
Duppies are traditionally Jamaican spirits of the dead who sometimes haunt people.
The song that the merry go round is playing is The Wanderer.
Kris Holden-Ried (Dyson Thornwood) and Shawn Doyle (Isaac Taft) end up working together again in the movie, The Returned (2013). They played Alex Green and Jacob respectively.