Explosion
Hillary wasn't expecting any of her plans to go south today, she was sure she'd succeed in killing the old Beau as well as Blake. With the old man gone she'd be able to get her hands on that lawyer and get the will because Jake would be too distraught to look after him or the company.
When the butler told her about the will, all her muscles started twitching excitedly so much she couldn't think about anything else other than laying her hands on it. She couldn't believe that the will would be lying around while she had looked for it for such a long time. She had searched for it in that very house. Several times she had invaded the house with the help of the butler to search for it but all to no avail.