“Holmes, Marple & Poe” by James Patterson: Are Holmes’ “MULTIPLE PERSONAS” merely his roles or are they his alternate personalities?

”Holmes felt the familiar thrill as he tapped a tiny hill of powder into the hollow between his curled thumb and forefinger. His heart thudded even harder. His pupils dilated. All his fight-or-flight responses were activated and firing. In some ways, this was his favorite moment. The anticipation of the rush. The delicious danger of being discovered. And the intensely heightened awareness of his multiple personas.

Business partner. Crime fighter. Drug fiend” (1, p. 122).

Comment: I read “multiple personas” as a euphemism for alternate personalties. Otherwise, the above is much ado about nothing.

1. James Patterson (and Brian Sitts). New York, Little Brown, 2024.