Possible Clues:

• Storyteller's embellishment
• Things are more complicated as spadework gets tougher?
• Somehow pitches tent OK, securing height and length? Things become more complex
• This is what happens when everything is blooming in allotment or so it's said when things get more intriguing
• 'This bed's horrid', says Violet Elizabeth, as story intensifies
• Ground becoming deeper? That's more intriguing
• 'Curiouser and curiouser ...'
• 'Now things are getting interesting' ... or a hint to the first words of 17-, 24-, 45- and 57-Across
• Exclamation after more information is revealed
• Picks tenth hotel on tour: it gets complicated