Towers - leon, ghosts: Where are the towers?

[wsony12]

I found one tower, where are the other tower(s) ? i killed the main ghost/skeleton, got 1/5 of vassal? ring; thanks leon said the tower(s) are north and west ? thanks

[JDR13]

Talk to him again and he will mark the towers on your map.

[Corwin]

This is actually a fun quest (talk to Leon several times) which links in nicely with a few other quests to make it all very worthwhile!!