One Show Only is described as "a narrative card where you interrogate witnesses to a murder by playing a card game". Certainly, that sounds intriguing enough.
Investigating a murder that occurred at a Circus, you'll use your deck of cards (composed of questions) to question different witnesses.
Where you place the card on the grid influences directly how the question is worded and what type of answer you'll get.
Just like this:
While the concept is interesting, the UI could do with some tuning. The developer said on his blog that the game is currently content complete but that it needs a lot more polish.
Let's hope the presentation can match the concept then. Look for it later this year on iOS and Android.