andrea tornielli: yes, yes.ests in a number of countries. ♪♪♪ ♪♪♪ lisa: the tourist guides boast that mount gambier in south australia offers unforgettable experiences and unique memories, but it's where this story starts for a woman who is missing a lifetime of memories. linda lawless: hi, how are you? well, welcome, come in. lisa: nice to meet you. lisa: linda lawless has spent the last few years delving into her past, hoping for answers to the questions about who she is. linda is searching for her biological father. lisa: so, you gathered all of this together, and what does it tell you? linda: nothing adding up. more questions. like, i'm just not getting any answers, and it's just getting more and more confusing. lisa: when linda was eight, she made her first holy communion, and a family secret was revealed. linda: that was the same year i found out that my dad wasn't my real dad, so it was a big year. lisa: the devastating discovery about her stepfather not being her dad hit harder when her mother admitted s