book cover of Heartstrings & Hijinks
 

Heartstrings & Hijinks

(2026)
(The sixth book in the Hattie & Moose series)
A novel by

 
 
Greta Sinclair is a multiple Amazon bestselling cozy mystery author and 2025 Global Book Awards Silver Medal winner for A Very Sticky Murder.

Valentine’s Day at The Grand Music Hall should be all about music, romance, and adorable pets—but chaos strikes center stage.

Hattie Leiper is ready to dazzle with her three talented companions: grumpy Chow Chow Moose, feisty Yorkie Mini Pearl, and suave British Shorthair Cecil. Together with her best friend Gracie and Detective Bo Becket keeping quietly monitoring the action, Hattie is set to compete in the first-ever Valentine ‘Heartstrings Showdown,’ where celebrities and their pets perform in perfect harmony.

But the glittering glamour turns to panic when Sir Bentley of Belcourt, a prize-winning Schnauzer, vanishes—along with a rare pink diamond on his collar. With the venue locked down by a security malfunction, Hattie must follow pawprints, unravel backstage intrigues, and expose a cunning thief before Bentley—or the jewel—is lost for good.

Warm, witty, and full of charm, this cozy caper proves you don'''t need a murder to create suspense—and that love, loyalty, and teamwork can save the day.

Bonus Recipes Included!

Greta Sinclair is a multiple Amazon bestselling cozy mystery author and 2025 Global Book Awards Silver Medal winner for A Very Sticky Murder.

See what readers are saying about Greta Sinclair:

⭐️⭐️⭐️⭐️��️ ‘No Murder, All Mayhem—and I Loved Every Page!’

⭐️⭐️⭐️⭐��⭐️ ‘A Valentine’s Cozy That Sparkles with Heart, Humor, and Paws!’

⭐️⭐️⭐���⭐️⭐️ ‘Locked Down at The Grand Music Hall with Three Unforgettable Animal Stars!’

��️⭐️⭐️⭐️⭐️ ‘Charming, Clever, and Cozy—This Showdown Stole My Heart’






Genre: Cozy Mystery



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