Question: Man Overboard! is written in the MacGuffin style which uses what?

Related documents: [0]  [DOC] Man Overboard! (also known as Cold-Blooded Murder) is a detective novel by Freeman Wills Crofts, first published in 1936. It is the fifteenth novel in the Inspector French series. The book is set largely in Northern Ireland, and re-uses two of the characters from the earlier novel "Sir John Magill's Last Journey" (1930) which was set in the same country. As a MacGuffin, the novel centres on a supposedly newly discovered (though possibly fraudulent) reversible chemical process that converts petrol into an inert form which is much safer for transport and storage. The potential commercial value of this discovery leads to intrigue, theft and murder, with everything finally solved by Inspector French after his usual dogged legwork and some flashes of inspiration. [END] 
[1]  [DOC] In fiction, a MacGuffin (sometimes McGuffin or maguffin) is a plot device in the form of some goal, desired object, or other motivator that the protagonist pursues, often with little or no narrative explanation. The MacGuffin's importance to the plot is not the object itself, but rather its effect on the characters and their motivations. The most common type of MacGuffin is a person, place, or thing (such as money or an object of value). Other more abstract types include victory, glory, survival, power, love, or some unexplained driving force. [END]  
Answer: plot device
plot device