Deletion of Derrial Book

Comment: leaving aside the reference to the film as a box office bomb, which is POV, it can be factually stated that both film and television series were critical successes.  Althought he articles could use better sources, a look at them indicates a lack of  and everything in them could be sourced to the published scripts, novelization, comics, or the non-fiction essays dealing with the series published in the two volumes ''Finding Serenity'' and ''Serenity Found
Stance: keep
Cited policy: Wikipedia:No original research (WP:OR)

Comment: as these characters have no reliable primary or secondary sources to demonstrate |notability outside of the television series or film spinoffs
Stance: delete
Cited policy: Wikipedia:Notability (WP:FICT)