This is the title track from the 1967 Beatles album and film of the same name. The ‘plot’ was structured around a merry band of travellers and strange characters who sign up to a mystery coach trip one day – destination unknown. Over the journey they get to know each other better, have their minds opened and enjoy … adventures. The film gets a mention in the definitive hippy narrative The Electric Kool-Aid Acid Test, which also tells the tale of a band of ‘Merry Pranksters’ travelling the country in a converted school bus and spreading their message of liberation as they understood it.

The link to the idea of Christian life as a pilgrim journey of mystery is too delicious to avoid. Over history, some branches of the church have been architecturally and socially austere, while others have been plush with colourful decor and ornament. Some groups focus on The Word and doctrine, while others find connection with the mystery of God in experience through art and symbolism.
So if that could work for you, this is the invitation – roll up for the Mystery Tour.
Wolfe, Tom, The Electric Kool-Aid Acid Test (London: Vintage, 2018) p.211