Crossword clues for the word: KNAPP The word KNAPP has appeared as an answer to at least 8 crossword clues on different crossword puzzles. Crossword clues for KNAPP Showing 1 to 8 of 8 results Clue(s) ___ Commission (corruption investigation at which Frank Serpico testified) ___ Commission (for whom Serpico testified) "Commission depicted in ""Serpico""" Commission associated with Serpico Commission featured in 'Serpico' Commission Serpico testified before Former women's mag editor L. ___ Curtis U.S.S. ___ (naval destroyer)