
1) American television talk show 2) Comprehensive 3) Not cursory 4) Rigorous 5) Thorough 6) Very detailed
Found on
https://www.crosswordclues.com/clue/in-depth

In Depth is a three-hour program that airs monthly on C-SPAN 2 as part of their Book TV programming, and features a different writer each month. Each interview covers the breadth of that author`s writing career, and incorporates viewer calls and e-mails. The show is typically broadcast live the first Sunday of each month. The first program was on....
Found on
http://en.wikipedia.org/wiki/In_Depth
[Adjective] Going into lots of detail. In maths the depth is the difference between the top and the bottom.
Example: Scientists made an in-depth study of the behaviour of chimps in the wild.
Found on
http://www.bbc.co.uk/skillswise/glossary/

extensive, thorough, or profound: an in-depth analysis of the problem. · well-balanced or fully developed.
Found on
https://www.infoplease.com/dictionary/in-depth
No exact match found.