25 Del. C. § 5902: Necessary parties defendant.

(a) Petitioners shall join as defendants:

(1) All parties duly disclosed to any of them in accordance with § 5105 of this title; and

(2) All parties whose interest in the property is:

a. A matter of public record; and

b. Capable of being protected in this proceeding.

(b) Petitioner shall not be prejudiced by a failure to join any other interested parties.