Stuck on last 4 - altogether - 18 across Lime made a comeback in his best known work K?S?N??; 19 down novelist noted for his careful brushwork? (7) ????A?L; 21 across (4,5) Black-and-white musician from Norway ??E?, P???R and 21 down (5) a supporter, say of folk tales ??O?P These have been driving me nuts for ages and any help will be greatly appreciated!
Thank you Captain 2 and Bibblebub - had still not got those 2 - had tried Emil earlier but got nowhere - had never heard of Erich Kastner or Vladimir Propp!