pay-per-view event (though please note the 2010 edition was actually titled Hell in a Cell

Please clarify which one you're interested in so I can help you find it.

To make sure I provide the right information, are you looking for the South Korean thriller movie directed by Kim Hyeong-joon, or the WWE No Mercy professional wrestling event from that same timeframe? Which content are you looking for? No Mercy (South Korean Film, 2010)