Bob ewell - To Kill A Mockingbird?

Please help me! i need to write a paragraph about how the Finch's and Radleys's played a part of bob ewell's death! i didnt even know he died! can someone please tell me what happeed? all i remembr was that myella was accusing tom of or something. did tom die? just curious... but my main question is, deos any have any idea about how finch's and radleys had anything to do with it. im so lost. please help.