I've received a couple of emails asking me about what stories share characters and the order that stories should be read in. This is a recommendation only. I try to ensure that each story is complete unto itself.
The Montauk stories should be read in the following order: 180 Days in Montauk, Betrayal in Montauk, A Montauk Daisy, A Montauk Nightmare, A Montauk Christmas, A Death in Montauk, A Good Girl in Montauk, A Montauk Horror (which could also be read first), Broken Daisies, A Montauk Mensch, Aberrant Weather, Alistair, Mexican Nights (Alistair, ch 2), An Unseelie Court, Kentucky Moonshine (Alistair, ch 3) and An Ingenue in Montauk coming in December.
A Montauk Horror can actually be read prior to or just after 180 Days in Montauk. It can then be followed by Aberrant Weather and A Montauk Mensch. An Ingenue in Montauk can be read at any point. It predates all of the other stories and is set in the 1960s.
Alistair is a fairly independent story in the Montauk universe, but would probably work best if read after Aberrant Weather.
Where I'm Supposed to Be is set in the same world as Contract Extensions, as are The Peasants Are Revolting, Sins of the Father, Broken Links and Salting the Earth. Princesa and Murder, Nine Points is set in the same world as Mr. X Games. All Sales Final is set in the same world and shares some of the same characters as Returning Home.