Donor House: "Alice -- A Death at the Donor House"

Donor House: "Echoes of Alexandria -- Alice and Nick's First Visit"

Afterlife: "Richard -- An Old Soldier Dies"

Donor House: "John's First Visit to the Donor House"

Donor House: "Jack -- An Asexual Vampire" and "Searching for Someone" (these are really part of a similar story arc for this character, so might be combinable)

Pagan Collection: "Vitali"

Afterlife: "Nathan -- Letting Go"

Donor House: "Caleb -- Caleb's Story"

Aurora's World: "Opal -- Talking to Margery"

Donor House: "Garion -- Finding a Beaten Vampire"

World Walkers: "Electra -- Athare -- Meeting a Rabbit"

I tried to rank these in order of personal favorites and most relevant plots, highest to lowest.