“Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent.Is he both able and willing? Then whence cometh evil?
Is he neither able nor willing? Then why call him God?” - Epicurus. 

Blake Ostler gives an overview of his latest book which explores how the theology of The Church of Jesus Christ of Latter Day Saints deals with the problem of evil. 

Get his book on Amazon: 
https://www.amazon.com/Exploring-Mormon-Thought-Gods-Plan/dp/1589586484