"... vague as a shadow..."

"... under the shadow of..."

"... take the shadow for the substance..."

"... shadow of her former self..."

"... jump at your own shadow..."

"... here falls the shadow..."

"... in the shadow of something big..."

"... fighting with shadows..."

"... clutching at shadows..."

"... cast a shadow over you..."

"...beyond the shadow of a doubt..."

"... afraid of her own shadow..."