This case analysis discusses the negotiations between Waltons Stores and Maher for leasing a property, where Waltons required the existing building to be demolished and a new one constructed. After Mayer agreed, they proceeded with the demolishment and construction. However, Waltons decided not to execute the lease, leading to damages for Maher. The key issue was whether Maher could recover the damages. The analysis covers the doctrine of promissory estoppel, unconscionable conduct, and the absence of consideration. The court ruled in favor of Maher, upholding the decision of the Court of Appeal and dismissing the appeal.