For most casual listeners, Serial marked the moment that the podcast went fully mainstream. Sarah Koenig’s intricately drawn-out murder case became a collective obsession. As we attempted to work out the time it took to get to that Best Buy store, the real-life players – Adnan Syed, his murdered girlfriend Hae Min Lee and friend Jay Wilds – became embedded in our consciousness. If the final episode didn’t conform to the rules of a whodunnit, it was a salutary reminder that these were real people, not fictional characters.

Now we have Undisclosed. Conceived by Rabia Chaudry, the Syed family friend and lawyer who first brought the case to Koenig’s attention, it covers the same story as Serial but, as Chaudry says, “this is not Serial part two”. Nor is it a “beautifully crafted narrative,” à la Serial. So, what is it? For Chaudry, who has known Syed since he was 13 and is a founder of the Adnan Syed Fund, her intentions are pretty clear. Where Serial mined questions of absolute truth and cleverly circled the possibilities of guilt and innocence, Undisclosed sounds like an update from the We Heart Adnan fan club, with Jay as Brutus to Syed’s Caesar. According to Chaudry, Jay sounded “like an actor who’s forgotten his next line” in his first police testimony. In his second, she says, he was prompted and helped by the police. It’s at this point you long for some of Koenig’s skittish, but ultimately valuable, introspective dithering.

The second line of argument that Undisclosed follows focuses on Adnan remembering where he was the day after Lee disappeared, but it is told in a pretty confusing fashion; Chaudry ends up sounding like she is repeating a tongue-twister over and over again.

You could forgive terrible production values – such as the differing sound levels and ham-fisted editing – if the content of Undisclosed added to the conversation. Instead, the show feels like a reheat of old leftovers rather than a new perspective. Perversely, perhaps, with its legalese-heavy tone and artlessness, what Undisclosed does do is remind us what a skilled storyteller Koenig is.