You're listening to the mens rea podcast, and this is the story of Tina Cahill and David Walsh. The

The Katrina Cahill, also known as Tina, was originally from Wexford, knew Ross, to be exact.

David Walsh, also known as Mottcha, from Ennis-Skorthy in the same county.

But when they met in late 2014, both had moved from Ireland to Australia the year before.

They'd started talking at a Bondi Junction pub, and they hit it off from there.

It was later reported in Irish papers that Walsh had in fact fled Ireland that year after being charged with assault

on an ex-girlfriend, three guardsy who he had allegedly attacked in Enniscorthy Garda

station, and another man who allegedly had part of his ear bitten off.

Having worked as a carpenter in his native Enniscorthy, Walsh worked in construction when he moved

to Australia, and Cahill worked for a traffic management company. They lived together in a house

in Padstow, off Watson Road on the outskirts of Sydney,

22 kilometres or 13 miles southwest of Sydney's central business district.

They'd had a number of housemates, but by 2017 they were sharing the place with two other women,

friends of Tina's, who were also Irish.

The relationship between the two was volatile, and was marked by a number of violent physical

incidents. Both Cahill and Walsh had injured one another. Whatever may have been the initial

cause of aggression in the relationship, the two of them didn't seem adverse to squaring up to one another to get their point across. On top of that, Walsh was

said to have been very possessive, which also manifested in aggression, but in this case,

towards men who he thought were perhaps moving in on his territory. It was reported that at one point

Walsh had attacked a man in a hotel because the man had spoken to one of Tina's female friends.

Walsh hit the man so hard he fell to the floor. Allegedly David said as the man lay there,

quote, he won't look at my missus again,

...