<P> The Lagina brothers became fascinated with the island after reading the January 1965 issue of Reader's Digest magazine that features an article on the Restall family's work to investigate the so - called "Money Pit". Marty and his brother Rick obtained a controlling interest in Oak Island Tours, which reportedly owns most of the island . The brothers were later approached by Prometheus Entertainment to do a reality show . Rick and Marty have engaged the assistance of father - and - son Dan and Dave Blankenship, permanent residents of the island who have likewise been searching for treasure since the 1960s . </P> <P> The series explores various Oak Island theories and conjectures through conversations with independent researchers . Persons featured have included Zena Halpern discussing her theory about North African gold and sharing copies of a French map of the island which she claims is dated 1347; J. Hutton Pulitzer discussing his theory of ancient mariner visitations; Petter Amundsen discussing his theory about codes hidden in Shakespearen literature and a secret project involving Sir Francis Bacon and the Rosicrucians; Daniel Ronnstam discussing his theory about the 90 foot stone being a dual cypher containing instructions as how to defeat the money pit flood tunnels with corn; authors Kathleen McGowen and Alen Butler discussing their theory involving the fabled Knights Templar treasure and an alleged relocation of historical religious artifacts to the island; and John O'Brien discussing his theory that the island contains treasures of the Aztec Empire . It has also been suggested by Zena Halpern, without evidence, that the Templars worshipped the Phoenician goddess Tanit . </P> <Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr> <Tr> <Th> First aired </Th> <Th> Last aired </Th> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 5 </Td> <Td_colspan="1"> January 5, 2014 (2014 - 01 - 05) </Td> <Td> February 9, 2014 (2014 - 02 - 09) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 10 </Td> <Td_colspan="1"> November 4, 2014 (2014 - 11 - 04) </Td> <Td> January 13, 2015 (2015 - 01 - 13) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 13 </Td> <Td_colspan="1"> November 10, 2015 (2015 - 11 - 10) </Td> <Td> February 2, 2016 (2016 - 02 - 02) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> </Td> <Td_colspan="2"> 16 </Td> <Td_colspan="1"> November 15, 2016 (2016 - 11 - 15) </Td> <Td> February 21, 2017 (2017 - 02 - 21) </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 5 </Td> <Td_colspan="2"> 18 </Td> <Td_colspan="1"> November 7, 2017 (2017 - 11 - 07) </Td> <Td> March 6, 2018 (2018 - 03 - 06) </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Season </Th> <Th_colspan="2"> Episodes </Th> <Th_colspan="2"> Originally aired </Th> </Tr>

How many episodes of oak island are there in season 5