The wedding dress which Trish wears in the finale is different than the one she modeled for her bridesmaids earlier in the season. The first dress had a dark maroon sash and no embellishments like flowers. The dress in the finale had a cream-colored sash the same color as the dress and a small cluster of cream-colored flowers at the waist.
Although Henry's adoptive father refers to his wife as Karen, her name is given in the credits as Cheryl.
Henry stabs his fiancé and two others and never gets a drop of blood on himself
Although the wedding invitations in the first episode noted Henry's middle initial as being W., in this episode his adoptive father calls him Henry James Dunn; it is possible that Henry secretly adopted the middle initial W. as a tribute to his real father's surname Wakefield.