This is a really, really well-done podcast. It reminds me of 'Someone Knows Something' by the CBC. I'm not familiar with Kromcast, but I'll definitely be checking it out now.
The content is also just as high-quality. Well-researched, thought-out, gives you a real feel for the time in which Mared and Karen lived and died.
I've been very interested in this crime since I heard about it - there had been so little information gathered in one place that it was frustrating for someone who wanted to know more. This podcast gives you all that.
One more thing: the extras on the website are great and really add to the story.