Curse of the Taverneigh Blue

When a cursed diamond at a museum display disappears and ponies begin dying mysteriously, Daring Do and Phillip Finder must stand together against something that cannot be defeated: Death itself.

The much-touted new exhibit at the Trottingham History Museum is a collection of artifacts recently collected from a hidden treasure trove in Neigh Zealand. Included among the exhibit is the infamous Taverneigh Blue, an allegedly cursed diamond that has brought misfortune to all who have seen it.

Famous author A.K. Yearling is among the attendees for the opening, as is detective Phillip Finder. But their meeting turns horrific when the diamond disappears and dozens of attendees die mysteriously. Pulled into the mystery, Daring and Phillip must team up once more, but as the body count rises, they realize that they may have met their match...

For you can't stop Death itself.

Notes: contains Canon X OC shipping. If this is not your cup of tea, please move along.
Contains references to Secret of the Mare Lisa. Recommended that you read that before you read this.

The Phillip Finder series
The Pony in the Gray Trilby
The Everfree Forest Affair
Time Flies
The Blue Moon Brings Death
Letters to a Candymare
The Face in the Darkness
Checkmate
Secret of the Mare Lisa
The Sun Falls
Clockwork
Behind Locked Doors
Siege of Clovenworth
The Silent Fugitive
Curse of the Taverneigh Blue
Mystery on the Mareish Moors
The Grilled Cheese and the Muletese Falcon
Trifle Not With Monsters
The Fillydelphia Solution
The Sydneigh Ritual
Endgame