Mennen v. Wilmington Trust Co., C.A. 8432-ML (December 8, 2014) Trust documents frequently provide that the trustee is not liable for any mistakes made in good faith. This decision examines how far that exculpation goes with respect to some very bad investment decisions. Not far enough in this case. It also shows that untruthful testimony, besides being just plain wrong, also has a way of really hurting that witness's case.