Okla. Stat. tit. 21, § 21-1482: Threats constituting extortion

Fear such as will constitute extortion, may be induced by a

threat, either:

1st. To do an unlawful injury to the person or property of the

individual threatened, or to any relative of his or member of his

family; or,

2nd. To accuse him, or any relative of his or member of his

family, of any crime; or,

3rd. To expose, or impute to him, or them, any deformity or

disgrace; or,

4th. To expose any secret affecting him or them.