Stepladder

Published in the  September 2019 issue of 1 Across as:

CROSSWORD NO. 1925: STEPLADDER by ECLOGUE

The puzzle's grid is presented with a number of cells already highlighted and solvers are advised that these may be of some use.

Solution grid

Stepladder

The solution notes reveal that the highlighted cells provide the alphabet in order and that the solution is a double pangram.