A very helpful book that addresses the problem of evil (and several other questions/issues with Christianity) is Tim Keller's The Reason for God.
other sermons in this series
Oct 3
2010
What's the deal with hell?
Preacher: Paul Ortlinghaus Series: You Asked For It
Sep 26
2010
Is all Scripture to be understood literally?
Preacher: Paul Ortlinghaus Series: You Asked For It
Sep 12
2010
What does it really mean to glorify God?
Preacher: Paul Ortlinghaus Scripture: John 15:8 Series: You Asked For It