101 Things You Might Not Know: 38 - 37
That Mrs. (Dorothy) Trent most often appears in the dark, while Mr. (Joe) Trent most often appears in the Light.
If the sword used by Lord James to cut Mrs. Trent in half, is the same sword used by his ancestor to cut the wyrm/worm/snake in half, then it is a two-handed landesknecht sword. One of the longest, non-ceremonial swords ever made.