This is a twisty mystery with a lot of red herrings, and (I have to admit) I didn't figure out all the clues before the author unraveled them for me.
There may have been a previous book or books with this main character; if so, they weren't necessary to enjoy the story.
From back cover:
Two of Jessie's friends, Laurie and Jim, have acquired their dream-an old lighthouse on the Alaskan Inside Passage-and invited everyone to a party. Not a party in the typical sense, but one where guests earn their keep by restoring Five Finger Light, named for the long, low islands around it.
So Jessie decides to leave her partner in crime, Alex, alone for a few days and lend a hand. With the company of old friends and a view to die for, Jessie won't soon forget this weekend-especially when she stumbles across a dead body. The death seems like an accident. But as a frantic Alex tries to reach Jessie, the isolated group learns that someone's cut the phone lines and wrecked the radio. Jessie realizes there's a killer loose on the island. Worse yet, the killing spree might not be over--even though the party certainly is.
Jessie Arnold solves a murder while she scrapes paint off an old lighthouse.
I liked it, but figured out who the good guys and bad guys were right away. It was still fun; I was glad I'd read it, and might read a few more of hers.