Very less, but some content revolves around adulteress.

The murder sequences can be violent and a little amount of blood throughout was shown.

A 1960s show can possibly have no profanities, BUT being strict, the most mild ones were used.

Drinking and smoking is two very common events.

Drugs are almost impossible.

ALL episodes CAN be quite frightening. (This statement is considering for all ages.)

Suspense is already a thriller-genre.