RTE 37

[lorus]

18a 11th century English publication penned, perhaps by prophets of perdition (3,8,4 )

17d What the winner takes next (5,4)

16d I can't print clue as it is a series of graph lines with highs and lows. (5)
could it be "stock takes "

[Oldred]

18a the domesday book

[chelle7272]

Have seen 16d answered as shock waves

Do you have any letters in 17d or 18a?

[lorus]

17d letters _M_R_S_E_

18a I found in my dictionary The Domesday Book

thank you chelle and all who have been so helpful

lorus

[eac2337]

The consensus on 17d would appear to be "smart step"

[bernedette]

16d stock index

[frances1958]

I think 16d is shock waves 23d leaped 27a bang away

[bernedette]

you could very well ,be right Crossword .a bit strange this week,17d. a prime example,it seems answer is smart step,but it makes no sense ,well not to me anyway