Complex sentence: When she returns from her honeymoon, Alicia is hard-pressed to find anything amiss in her new home; the only thing she can relate to Devlin is that the key ring her husband gave her is short a key, the one to the wine cellar.
Split into simpler sentences: When she returns from her honeymoon, Alicia is hard-pressed to find anything amiss in her new home. The only thing she can relate to Devlin is that the key ring her husband gave her is short a key, the one to the wine cellar.