After solving the kidnapper's riddle, you realize that you have no clue how to get in touch with him. You wait until the end of the specified fortnight, and sure enough, you receive a phone call. "I solved your riddle," you say, triumphantly.
The only response is, "Answer?"
You provide the solution, and the kidnapper says, "Good. You solved it. Time to get your precious Geronimo back. Open your door; you'll see another note for you."
As you open the door, you find another note. It reads:
Congratulations,
You solved the riddle within the fortnight, and your cat will live to see another week (or two, if you're quick). Before you can get him back, we have to meet. Unfortunately, you don't know how to find me, and I won't come to you. Figure out the next letter in each sequence, then unscramble to find the solution. Inspired by VictorHenry.
Where am I?
- S, P, S, M, T, ?
- A, B, B, F, G, L, M, ?
- W, A, J, M, M, ?
- V, M, K, K, E, E, ?
- F, M, M, B, B, E, ?
- S, M, H, D, W, M, ?
- C, T, F, N, I, ?
- R, C, U, C, B, A, ?
- W, B, S, K, N, ?
- A, T, J, A, F, ?
- N, U, S, J, M, ?
- P, A, I, S, ?
- T, T, T, F, F, S, S, E, ?
- E, G, D, S, F, L, ?
I feel nice, so I'll start you out with one letter given: C.
Love, Al.
Hint 1:
Some of these sequences are worldly knowledge, such as oldest cities, fastest rivers, etc. Others are only found between the pages of a novel.
Edit:
Nearly a year has passed, you can only hope your cat is still alive. If this question regains some traction I think it might be nice for someone to compile the existing (and future) answers into one or make a community answer.