Echoes from the past vs The mysterious warning: Which Should You Read?

Both live on shelves: Gothic fiction

Echoes from the past Marjorie McEvoy · 1979 ★★★★☆ 3.8 185 pages · ≈ 3 h 26 m · Moderate Find on Amazon

The mysterious warning

The mysterious warning Eliza Parsons · 1796 388 pages · ≈ 7 h 11 m · Demanding Find on Amazon

The verdict

Echoes from the past is the quicker read — about 3 hours vs 7 for The mysterious warning.
Echoes from the past is the easier read (Moderate), The mysterious warning more demanding (Demanding).