This is Hidden Killers with Tony Bruske. Today we're diving into a case that took a dark turn

faster than an overpriced vacation to tropical paradise. The chilling attack on Ariel Kainig by

her husband, respected anesthesiologist Gerhard Kainig on a remote Hawaiian hiking trail. On the surface, everything

seemed picture perfect, successful careers, happy kids, an idyllic home life. But life beneath

this glossy exterior was allegedly something deeply troubling. Jealousy, manipulation, and escalating violence.

Joining us today to help decode this baffling behavior as retired FBI special agent

Robin Drake, former chief of the counterintelligence behavioral analysis program.

This is an interesting one.

This is where Gerhardt allegedly pushed her off a cliff,

hoping for her to die. From your experience, Robin, analyzing human behavior, how does someone

like Garrett Caning, highly educated, trusted professionally, seemingly calm, make such a leap

from quiet manipulation to allegedly attempting to murder his spouse in such a brutal premeditated fashion.

I mean, the guy had syringes with him.

Well, it wasn't a, like you said, it didn't go from zero to 100.

This was an escalation.

And it's not surprising that someone with that level of education and thoughtfulness is going to plan it to make it look natural, look like a mistake, look like a tragedy.

Interesting, he had syringes with him that we don't know what was in those syringes.

But, you know, when I saw the syringes, like, that makes sense.

Because any case that we cover that has involved a medical professional in some way, there has been some degree of poison that they've tried to use during the conduct of that case.

And so him having syringes with him, I'd love to find out what he had in a syringes thinking that

they wouldn't show up in a medical examiner's report if he planned on using them.

Yeah, wouldn't show up in a medical examiner's report, but you're trying to push her off the

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