Answer: danno

AnswerCrossword Clue
DANNO"Hawaii Five-O" detective, to his boss
DANNO"Hawaii Five-O" nickname
DANNOFive-O's Williams, to McGarrett
DANNOChin Ho co-worker, in a TV cop show
DANNOSteve's sidekick in "Hawaii Five-O"
DANNOFive-0 detective, familiarly
DANNO"Book 'em, ...!" ("Hawaii Five-O" catch phrase)
DANNOTV booking agent?
DANNO"Hawaii Five-O" name
DANNONickname in a 1970's crime drama series
DANNOGuy with a lot of bookings?