Wills, Trusts, and Estates
Bar
Several things bar people from succession.
Slayer Rule
The slayer rule bars people from inheriting from people they killed.
UPC § 2-803 provides that slayers are treated as having disclaimed the property.
Disclaim
Anyone can disclaim his inheritance if he really wants to.
Under UPC § 2-1106, a disclaimant is treated as having "died immediately before" the victim.