The Avengers S05E03 - Escape in Time

In which Steed visits the barber — and Emma has a close shave...
Diabolical masterminds and criminals have been disappearing, eluding the law and leaving no traces behind them. When agent Paxton also vanishes, and is later found dead, shot by an Elizabethan bullet, Steed and Mrs Peel find themselves apparently involved in an outrageous scheme to travel back through Time. Information that an evil dictator, Josino, is considering a quick escape leads Steed and Emma to Mackidockie Mews, an upper-class street in 1960s London where the dictator is due to meet an accomplice.