Locke and Key/WMG

Kinsey will be diagnosed with antisocial personality disorder.
She shows a lot of the symptoms of it. Most damning is that even though she can still love and care for people, she can't empathize with their pain or be worried about them. The closest she can get is being angry on their behalf. Nina Locke is about to get another phone call that'll make her very unhappy.

Detective Mutuku is going to have a swordfight with Dodge.
And it will be awesome.
 * Confirmed as of Keys to the Kingdom...sort of. Mutuku uses a rolling pin to defend against Dodge's rapier, and actually wins.

Rendell Locke's final confrontation with Dodge took place on stage during The Tempest.
Since it involved the dramatic use of so many keys, the memories of adults could only explain it to themselves by remembering it as part of the production. This also made them not remember that the group was fighting. Judging by Professor Ridegway's flashback, Rendell Locke fought with the Crown of Shadows and used the Anywhere Key somehow. Dodge seems to have made himself larger and more muscular (but not Giant Key-sized) and Rendell looks like he made himself older. Also, Kim Topher may actually be flying.

There's a Chekhov's Gun in the flyleaf of the hardcover Crown of Shadows.
The cross-section view of the wellhouse clearly shows a hatch at the back of the cupboard, opening into to a shaft leading down off the bottom of the page. Ten to one says that will get explored at some point. (Question: Is this more accurately described as Chekhov's Gun or as Foreshadowing?)

The Eldrich Horrors beyond the door live in a dimension beyond time, and can see into the human realm.
This Troper was annoyed at first that apparently Benjamin Locke  that included symbols he'd have no familiarity with (A ying yang? DNA?), but then I remembered that

The real reason Erin Voss only says "white".
It occurred to this Troper when reading Clockworks #5. Dodge  comments that Rendell will never love Erin because she is not white. While this might at first just seem to be a remark to sow discourse, Erin probably believes this as well. Later on, she only says "white", but not only because  but because it reminds her of everything she could never have and now can never have.