‘Peter Bergmann’ isn’t his real name. The Vienna address he gives at the hotel doesn’t exist. Bags seen on CCTV are never found, including a purple plastic bag he is seen with 13 times over three days. What was in it? Where did he empty it? And why all the secrecy?

Irish Times journalist Rosita Boland spent years investigating this case. She spoke to every witness she could think of, visited the hotel and the beach, determined to find out who this man really was. But 16 years later the mystery is yet to be solved.

Rosita joins Sarah McGlinchey over two episodes to guide her through that investigation. Could she, and the Gardaí, have missed something? Or is this a case that will never be solved? And what was in the plastic bag?