As a detective solving the mystery of the crossword clue ‘Peeked’, I had to dive into the depths of my knowledge and expertise to deduce the answer correctly. At first, I began by looking at the length of the word and the surrounding letters. I noticed that the word had six letters, which ruled out some of the longer words like ‘observed’ or ‘examined.’ Additionally, the letters ‘H’, ‘A’, ‘D’, and ‘O’ were present, which didn’t give much indication of the possible words.

With this information in mind, I started to recall different synonyms for ‘peeked.’ Suddenly, ‘had a look’ popped into my head. It fit perfectly with the letters I already had, and the definition of the phrase coincided perfectly with the clue. I then formed the answer – ‘HADALOOK’ – in my mind, which I verified with the crossword and found it was a perfect match.

In conclusion, it was my knowledge of synonyms, the length of the word, and the surrounding letters that led me to successfully solve the mystery of the crossword clue ‘Peeked.’ Being a detective, I always strive to find every clue, analyze all the possibilities, and make decisive deductions to solve the puzzle.