[sufue]

The Mayan Mask of Death is the first in the short (per SYKM) two-book Arla Vaughn series by sisters Loretta Jackson and Vickie Britton. It is free right now at Kindle US. I'm not totally sure about the status of "CreateSpace" as a publisher, but SYKM lists it, so I'm going with that.

link: https://www.amazon.com/Mayan-Mask-De...dp/B0722TJY44/

Spoiler:

When Arla Vaughn accepts the role of temporary Dean of Archaeology, the museum’s purchase of an elaborate Mayan mask seems an evil portent. The dual face, one side a handsome Mayan nobleman, the other side a skull-like visage with a glimmering obsidian eye represents the good and evil of mankind. Three years ago Jordan Lund’s wife was strangled on campus and he has devoted his life to finding her killer. When a second woman from Arla’s department is murdered in the same way, the police believe this is the work of a mysterious serial killer known as The Scarlet Strangler. But Arla soon links the brutal murders to the dig in Copan. Her investigation takes her to where the mystery has its roots, the Copan ruins in the jungles of Honduras. There, to uncover the truth, Arla must match wits with a killer as duplicitous as the Mayan Mask of Death.

Two other titles by Jackson and Britton are also free right now, but not listed in SYKM, so may be self-pub. One is a short story in the Jeff McQuede series, so probably wouldn't be listed on SYKM anyway, and the other is the 6th title in the same series, where SYKM only lists four titles, but since they are free I thought I'd add the links to this post. Please ignore if you're offended...
Loyalty (short story): https://www.amazon.com/Loyalty-Loret...dp/B00I0VQ31Q/
Crying Woman Bridge: https://www.amazon.com/Crying-Woman-...dp/B0167N4JEG/