Beginning to read Henry McDonald a seedy crime writer (15)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

Beginning letter of R [ead], then an anagram (seedy = disreputable, worn-out, or feeling ill) of HENRY MCDONALD A . Well, there was a journalist called Henry McDonald who wrote at least one detective novel – but Raymond Chandler is a much better-known name as a crime writer.