Buffalo Bill's Dead Now, by Margaret Coel

This book was structured rather differently than I am used to, but it was very interesting. Part of it takes place as Buffalo Bill's Wild West Show tours Europe, which then ties into the clothing that one of the Arapahoe leaders wore in that show. The whole outfit disappeared during the tour and has recently resurfaced. A collector has offered it as a donation to the new museum at the mission, but when the boxes arrive for the display, all they contain is bubble-wrap. Immediately thereafter, the donor is killed...and things take off.

Oh, and there's the whole Father John/Vickie/Adam triangle again too.