As is usual with Doctor Who, the monster is a bit slimy and scary. It may creep out the littler kids.
There isn’t really any sexual content in this one.
I’d say it’s clean!
What did Rose have to do to become a companion to the Doctor?
What is the Doctor’s mission?
How does he accomplish this mission? Will he ever complete it?
What does the Doctor’s mission have in common with the mission of Christ?
The Doctor shares his life with his companions. He shows them the whole of time and space. How is this like what Jesus Christ does for His Church?