Deadly serial killer Allan Grimson has already confessed to two murders, for which he is serving a 22-year prison sentence. But police believe more of his secrets might be about to come to light after they finished an 11-day dig in Gibraltar last week.
Officers were hoping to find the remains of missing Royal Navy seaman Simon Parkes, removing 80 tonnes of earth in their search.
The 18-year-old disappeared on December 12, 1986, and is now presumed to have been murdered. It's the exact day that, more than 10 years later, another Navy recruit and a young barman were also killed.
The coincidence has led police to believe that one man could be responsible for all three murders. Allan Grimson has previously admitted to murdering Nicholas Wright,
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