20.
Systemic enquiry into a subject
25.
Former East German secret police
26.
Mentor for Luke Skywalker
34.
Green Eggs and Ham, Sam ___
38.
Former White House spokesman Fleischer
40.
"I've Got ___ in Kalamazoo"
44.
Screenwriter/novelist Roald
45.
Work to get, as someone's trust
46.
Physicians, for short