<Tr> <Th> 44 </Th> <Td> "The Heat is On" </Td> <Td> Colin Budds </Td> <Td> Philip Dalkin </Td> <Td> 25 January 2008 (2008 - 01 - 25) </Td> <Td> 218 </Td> </Tr> <Tr> <Td_colspan="6"> With the arrival of the girls' one year anniversary as mermaids, Cleo organises a party at Mako Island to celebrate . But when Zane accidentally spills some drinks on Emma at the cafe, he is forced to have an argument with Ash to stop him from seeing her as a mermaid . Overhearing Zane calling her a' clumsy waitress', Emma doesn't realise he is only trying to help her, and gives him the cold shoulder . This leads to Emma and Zane's girlfriend Rikki becoming enemies, and it looks like there will be no party at Mako Island, which upsets Cleo . Meanwhile, Lewis feels guilty when he realises he hasn't been spending much time with Charlotte . </Td> </Tr> <Tr> <Th> 45 </Th> <Td> "The Gracie Code, Part One" </Td> <Td> Colin Budds </Td> <Td> Max Dann </Td> <Td> 1 February 2008 (2008 - 02 - 01) </Td> <Td> 219 </Td> </Tr> <Tr> <Td_colspan="6"> <P> While doing some research on Mako Island, Lewis uncovers the work of Max Hamilton, who, fifty years before, was also investigating the place . Realising that his findings could be the key to finding out more about the Moon Pool and the girls' transformation, Lewis tries to befriend the old man, but finds him unwilling to talk...until, that is, he sees Cleo talking to Lewis, and recognises the locket around her neck . Max follows Lewis and Cleo to Mako Island, splashes some water on Cleo, and discovers that she is a mermaid as well . He is not shocked, however, because Max was a friend of Miss Chatham's when she was a mermaid along with Gracie and Julia Dove in the 1950s, and was romantically involved with Gracie . Max promises to keep Cleo's secret, and hands his research on Mako Island to Lewis . </P> Absent: Claire Holt as Emma Gilbert </Td> </Tr>

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