Complex sentence: Many of these "true occurrences" Chris Mentillo recorded were later used in his radio show broadcasts, which later lead to Mentillo writing more about true crime mixed with horror and the supernatural for which he believes all intertwine.
Split into simpler sentences: Many of these "true occurrences" Chris Mentillo recorded were later used in his radio show broadcasts. This later lead to Mentillo writing more about true crime mixed with horror and the supernatural for which he believes all intertwine.