Ibrahim joins Elizabeth, Joyce and Ron for dinner with Holly Lewis at Coopers Chase. Holly is tense and difficult, but Elizabeth presses her about Nick Silver’s disappearance and about the mysterious "cold storage" business she shares with him. Holly explains that their company does not protect digital secrets online; instead, it physically stores sensitive hard drives and documents in secure safes, making theft harder for hackers and easier to control through physical access.

Holly then reveals the true stakes behind Nick’s disappearance. In 2011, she and Nick accepted payment in Bitcoin from a client and ended up with about five thousand Bitcoin, represented by a written key. As Bitcoin’s value rose, they moved the key into one of their own safes at The Compound and later arranged matters so that neither of them could access it alone. By the present day, the contents of that safe are worth about £350 million.

Holly says Nick recently decided it was finally time to cash out, and that they began asking for advice on how to sell such a large holding. The two people they approached were Lord Townes and Davey Noakes, which means both men learned how much money was involved. Elizabeth and the others recognize that once news of the fortune spread, Nick became an obvious target.

Elizabeth questions Holly about why she seems so determined to find Nick yet so unconcerned for her own safety. Holly argues that killing Nick would only make sense if someone had his code, and says her own code is separate and not easily obtainable. When Joyce asks who would receive the codes if both Holly and Nick died, Holly reacts sharply and then claims she does not know, though Ibrahim senses she is lying. Holly leaves after giving them little more than her insistence that Nick is still alive.

Once Holly is gone, the group discusses the contradictions in her story and begins to suspect that Holly herself may have planted the bomb under Nick’s car in order to gain access to his code and the fortune. Their theory is interrupted when Holly’s car explodes in the visitors’ car park. Elizabeth rushes outside, realizes Holly is dead, and retrieves Holly’s burning phone from the wreckage in hopes that the SIM card survived. Holly’s murder overturns their latest conclusion and leaves Elizabeth with a new question: who is now killing for the Bitcoin fortune?