10x10 ending explained - who is Cathy and what did she do?

10x10 has become the most-watched movie on Netflix UK, so let's delve into its dark twist and ending to explain who Cathy really is and what she did.

Related Keywords

,Jane Spencer ,John Lamptey ,Robert Luke Evans ,Cathy Reilly ,Luke Evans ,Kelly Reilly ,Netflix United Kingdom ,Run Rabbit ,Charleston Three ,Netflix United ,