On a cold winter night in December 2000 Sandra Collins went missing from a small fishing village in Mayo. Five days later, her fleece was found on a local pier, but despite extensive searches, no other trace of Sandra has ever been found. There have been arrests, trials, and even a reclassification to murder, yet the case endures as one of Ireland’s most tragic and unsolved mysteries. Crime World’s Nicola Tallant and Jenny Friel discuss their la…