The stories take place in Pete's World, the parallel universe made famous in the TV show Doctor Who. In my little world, this actually has several different sub-universes containing several fandoms. There is:

Sharing the Burden: this involves the Criminal Minds and CSI: NY fandoms
The Schoolteacher and the Detective: this involves the CSI: NY fandom
A New Path: this involves the Doctor Who fandom

These universes tend to cross, especially when the latter two contain cousins - Stephanie Ryan (CSI: NY) and Elizabeth "Ella" Stark (Doctor Who).

Some of the stories will also contain crossovers with Iron Man, James Bond (Daniel Craig-era), Highlander, and sometimes with CSI: Miami and CSI: Crime Scene Investigation. I may add more crossovers as I feel like it.

Here are the abbreviations for the sub-universes when dealing with the timeline:

SB - Sharing the Burden
S&D - The Schoolteacher and the Detective
NP - A New Path

( The Stories )