By Sean McPolin An couple whose yacht was hijacked by three runaway prisoners are feared dead after their boat was found with “copious amounts of blood” inside. Ralph Hendry and Kathy Brandel, from Virginia, US, were onboard their catamaran “Simplicity” in Grenada when the escapees are believed to have made their way on board. They had been sailing around the Caribbean island and docked near Saint George when it was stolen. They are now believed to be dead and the three suspects – Trevon Robertson, Ron Mitchell and Atiba Stanislaus – who were being held at the South Saint George Police Station…