Gem: Lancastria?

The sinking of the British troop ship, HMT Lancastria, by a German bomber, on 17 June 1940, was the single greatest loss of life in Britain's maritime history. Seventy-three years later, the tragedy of the HMT Lancastria comes back to haunt Gem and Wyatt Grantham when two skeletons are discovered at Grantham Hall in the sleepy English village of Ticking Bottom. While Gem, Wyatt, and their mates try to unravel a mysterious connection between the skeletons and the Lancastria, Wyatt's former lover, the glamorous movie star, Emerald, appears with her own agenda - to throw a spanner into the Grantham's marriage - prompting Gem to question their relationship - and her trust in her husband.