A mega-prison with 80 inmates per cell, overseen by the "world's coolest dictator": Donald Trump's got a new plan for deporting criminals. But is it legal?

And 85% of Aussies live near the coast, but we've been dropping the ball on swimming lessons. We head to an adults-only class at a uni in Perth.

Plus, after one of the big Netflix shows of the year so far, what do Gabby Petito's parents want you to know about their daughter's story?

And if you need help or support, you can reach out to:

• Full Stop Australia at 1800 385 578
• 1800-RESPECT on 1800 737 732

Listen now:

01:30 - Australia's coercive control problem

06:00 - What Gabby Petito's family needs you to know about DV

15:30 - Why everyone in the US is talking about a mega-prison in El Salvador 

19:30 - Learning to swim as an adult

Guests:

• Joe Petito, Gabby's father, vice president of the Gabby Petito Foundation
• Jim Schmidt, Gabby's step-father, secretary of the Gabby Petito Foundation
• Justin Scarr, CEO, Royal Life Saving Society Australia 

 Get the whole story from Hack:

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• Listen to our deep dive wherever you get your podcasts 
• Listen on the triple j app or on your radio live at 5:30pm