How many letters does the top answer for “wrote ghost whisperer” have?

The most common answer is hewitt (6 letters).

Crossword clue: wrote ghost whisperer

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

hewitt 6 letters wd-fact-v3

wrote ghost 67% similar → goldberg, moore

author of ghost whisperer 50% similar → hewitt

composer of ghost whisperer 50% similar → hewitt

wrote the canterville ghost 50% similar → wilde