Yes. Many works claim to be based on true stories, and 'Killer Joe' is one of them. It might have drawn inspiration from real events, perhaps some criminal cases or real - life characters, and then adapted and fictionalized them to create the story we see in the final product. This gives the work an air of authenticity and can make it more engaging as it taps into our interest in real - life drama.
Killer Joe is not a true story. It's a work of fiction that was written and developed by the author's imagination. Usually, such stories are crafted to engage and thrill the audience with made-up plots and characters.
It's not based on a true story. 'The Average Joe' is likely the product of the author's imagination, crafted to entertain and engage the audience without drawing from real-life instances.