What is the author's style in Black Cross by Greg Iles?

The language of this novel is fairly casual and informal. At times, the journalistic portion of the novel can seem a bit more stiff and informal due to the difference in the vernacular within the past sixty odd years; however, regardless of which time period is being presented at any given point in the novel, the language is always appropriate to the time period. Generally, the sentence construction and language are grammatically correct which enhances comprehension for the reader by avoiding the confusion that can occur as a result of poor grammar and improper sentence construction. The different writing styles are used to enable the reader to distinguish between Mark McConnell III and Mark McConnell, his grandfather. The adherence to the language of the time period allows the reader to easily differentiate between these two characters.