SAINT JOHN, N.B. -- The tragic tale of the Titanic still captures attention more than 100 years after the passenger liner sank in the North Atlantic 600 km southeast of Cape Race, N.L. Now, Canadian researchers are investigating the authenticity of a message in a bottle allegedly thrown from the liner before it went down. Four years ago, a family walking along the shores of the Hopewell Rocks near Hopewell Cape, N.B., stumbled upon a maritime mystery. It was a still-sealed bottle with a message inside -- a letter dated April 13, 1912 -- and signed by Mathilde Lefebvre. That's the name of a passenger on the Titanic, who perished in the tragedy.