Solutions Book by Graham Greene has 21 entries with similar clues

• 3-letter words
• our... man in havana, graham greene novel
• 4-letter words
• alpoPet food brand once promoted by actor Lorne Greene
• rockBrighton ......, novel by Graham Greene
• seth"pride and prejudice and zombies" author grahame-smith
• 5-letter words
• loser...... Takes All, Graham Greene novel
• human1954 film drama starring glenn ford and gloria grahame
• 7-letter words
• herbageGreenery
• verdureGreenery
• verdantLush with greenery
• 8-letter words
• inventorAlexander Graham Bell or Charles Babbage, for example
• 13-letter words
• the-comediansNovel by Graham Greene
• 14-letter words
• the-man-withinNovel by Graham Greene
• 16-letter words
• the-human-factorNovel by Graham Greene
• a-burnt-out-caseNovel by Graham Greene
• 17-letter words
• our-man-in-havanaNovel by Graham Greene
• 18-letter words
• the-quiet-americanNovel by Graham Greene
• 20-letter words
• the-ministry-of-fearNovel by Graham Greene
• travels-with-my-auntNovel by Graham Greene
• 21-letter words
• the-end-of-the-affairNovel by Graham Greene
• 23-letter words
• the-heart-of-the-matterNovel by Graham Greene
• the-power-and-the-gloryNovel by Graham Greene