Seven Crows order to destroy the cross-border vampiric threat. Riley and Sam cannot count on back-up from their normal team, as high-level string pulling has pushed them off the case officially. The four discover there is more than just seemingly random vampire murders when more than one supernatural threat shows up and local hospitals begin filling with the sick and the dying. Crows are also prevalent as well. Many are mysteriously dying. Living crows seem to be warning the foursome of future threats based on an old poem. The poem goes like this: "One crow sorrow/Two crows mirth/Three crows a wedding/Four crows
Deverbal noun "-ing" form of any verb can serve as a deverbal noun, although the same word form can also be used verbally as a gerund or participle. When the term "deverbal noun" is used, it is generally contrasted with the term "verbal noun": a verbal noun being a word with verbal characteristics used to form a noun phrase, and a deverbal noun being a noun with no grammatical verbal characteristics other than its being derived from a verb. (This is the terminology that is used in this section. However other authors may use the term "verbal noun" to cover both cases.)