This is going to be a Sentinel/BtVS or Ats crossover, most of the story set in Cascade.

The Major Crimes Unit of Cascade gets a new secretary to help coordinate etc.

The secretary is either:
Buffy (you need to explain why she is not a cop, with her abilities. Maybe the hours (uneven) would interfere with slaying?)

Willow (Explain: Willow could easily make lots of money as a programmer/computer person. Why a secretary?)

Dawn. (Why? Let us see some of her past (flash-backs) since you would have to make her older by a couple of years. What happened in those...

Hi, I'd like to see a crossover story with btvs and the sentinel.

-Oz leaves on his road trip because he needs to learn to control his inner wolf. He ends up in Cascade. Is this before or after he came back during the whole Initiative thing? If it is after, is he still able to control his wolf? Can he turn into it during the day? Willow sparked the transformation, as long as he keeps his cool he remained human, but strong emotions brought out the wolf. Even in the daytime. Is Oz able to control the transformation at will? Is he still a three nights a month werewolf? Or does he go wol...

Hi, I would like to see a crossover story with btvs and the sentinel.

-Remember the episode in season two, the on with the career day? Buffy´s carrer test recommended a job in law enforcement. Aka a cop.

-You can start this at any point in the series, perhaps Buffy decided to leave for college after all when Faith showed up. Faith was after all the next in the Slayer succesion. Or perhaps after the events of chosen. She is not really needed with all the slayers running around. Or you could make it AU. (She should still be the slayer, but maybe you could kill off Faith at ...

I'd like to see a crossover with P:tL.

When Xander is on his trip after season three(?) his car didn't brake down in Oxnard. Instead he goes to San Fransisco, the home town of the Legacy.

Requirements:

-Xander is possessed by a demon/ghost/hostile entity and the Legacy members are called in to save him.

-A scene in which Rachel/Derek/the other members of the Legacy discuss how well Xander is dealing with having been possessed. Wondering why he isn't more spooked.

-Xander wondering/being angry that he is always the one who ends up possessed (soldier...