In Maryland, a will can be contested by an interested party, such as a beneficiary or heir, if there are legitimate grounds. Common reasons for contesting a will include lack of testamentary capacity, undue influence, fraud, or failure to meet legal requirements. The challenge must be filed within 6 months of a personal representative being appointed. The process involves submitting a formal petition to the Orphan’s Court, presenting evidence, and possibly appealing the decision if the challenge is unsuccessful.