CBS copying CBS?

The Backfire episode of CSI: Miami on April 19, 2010 starts with a flaming home, with a child inside, and some interesting flame special effects. The kid is saved, but later is pronounced dead. Borrowing a page from CBS GhostWhisperers/Medium shows. CSI shows the kid's ghost looking at the kid's body, saying I'm not dead. With so much self-borrowing going on at CBS, it's getting tough to recognize which show you're watching. The show summary A murder victim's spirit won't leave Calleigh alone until she solves his case sounds straight out of Medium. Yes, Calleigh sees, and talks to, the dead kid.

Query: is self-plagiarism plagiarism? SIU said no.

Chemistry note on turpentine: Turpentine is a fluid obtained by the complex distillation of resin obtained from trees, mainly various species of pine (Pinus). It is composed of terpenes, mainly the monoterpenes alpha-pinene and beta-pinene.
pinene