Watch Mrs Biggs Episode 1 HD Full Free on SolarMovie. Watch Mrs Biggs tv series online free. The true story of Charmian Brent (née Powell), the rebellious product of a strict 1950s upbringing,...The true story of Charmian Brent (née Powell), the rebellious product of a strict 1950s upbringing, and her whirlwind romance with Ronald Biggs leading to a descent into crime, most infamously 1963's Great Train Robbery.