The team finalizes their prototype but, in a role reversal, Richard has confidence in the design while Jack doubts it will work. Jack leaves the team to test fire without him as he and Susan accept Ernest and Maggie's invitation to go camping in Joshua Tree. While Susan gets better acquainted with Maggie, Ernest uses a mind-bending elixir to teach Jack about the power of Thelema.

• Mark Heyman

• Rupert Friend
• Rade Šerbedžija
• Jack Reynor