Heroes are members of TFLAC [her ongoing series:] - the psi branch. The first book was set in Africa [just love those mythical African countries - something like the mythical Balkan countries popular in earlier romances, after all you've got to get all those princes from somewhere!:]. Hero's powers are short circuiting, there's an unknown plague decimating the population, and the heroine is supposed to help the current president get re-elected. Good hero and heroine. The heroine's sister appears in Adair's short story “Tropical Heat” in Rescue Me.

You could probably read 2 before 1 if you had to - but the story arc is moving to completion in 3 so that should definitely be read last.

Night Series:
1 Night Fall
2 Night Secrets
3 Night Shadow