Mandi Hale was the runner-up of Series 18.
She first appeared toward the end of the series, winning 5 heats before losing to Mark Cooper. She returned for the finals as #5 seed, and beat Derek Stuart-Clark in the quarter-final and octochamp Jonathan Anstey in the semi-final. The final against Rajaretnam Yogasagarar went to a crucial conundrum, but Hale was pipped at the post and ultimately had to settle for series runner-up.
In 1996, Hale played in the Supreme Championship, where she was pitted against Brian Hudson in the first round. The game was very close, with Hudson pulling ahead at first but Hale evening up the score with BUSIEST. She then correctly reached the 381 target in the final numbers game to gain a ten-point lead. However, Hudson correctly solved the conundrum to set up a tie-break. LUNACYINN was revealed and it was Hudson who buzzed in with the correct answer to defeat Hale 58 – 48.
Hale's brother, Guy Phethean, also appeared on Countdown.
Hale appeared in an episode of The Crystal Maze, where her team lost heavily after only having 10 seconds on the clock for the Crystal Dome round (Details). She also appeared on the now-defunct Turnabout where she was a losing finalist. She also appeared on The Chase in 2012, along with Series 62 contestant Heather Badcock.
|#||Date||Type||Contestant 1||Score||Contestant 2||Guest||Lex||Max|
|924||26/09/1989||P||Mandi Hale||51 – 27||Rosemary Tame||Dinah Sheridan||Freda Thornton||73|
|925||27/09/1989||P||Mandi Hale||41 – 30||Brian Burrows||Dinah Sheridan||Freda Thornton||72|
|926||28/09/1989||P||Mandi Hale||46 – 27||Julian Bloom||Nigel Rees||Freda Thornton||83|
|927||29/09/1989||P||Mandi Hale||54 – 36||Doris Beckerlegge||Nigel Rees||Freda Thornton||70|
|928||2/10/1989||P||Mandi Hale||65 – 29||David Dillner||Nigel Rees||Freda Thornton||71|
|929||3/10/1989||P||Mandi Hale||32 – 48||Mark Cooper||Nigel Rees||Freda Thornton||70|
|934||10/10/1989||QF||Mandi Hale||53 – 47||Derek Stuart-Clark||Gyles Brandreth||Catherine Clarke||70|
|935||11/10/1989||SF||Mandi Hale||48 – 36||Jonathan Anstey||Eve Pollard||Catherine Clarke||73|
|937||13/10/1989||GF||Mandi Hale||73 – 92||Rajaretnam Yogasagarar||Frazer Hines,|
|M63||11/6/90–15/6/90||Masters 2||Jonathan Anstey||95 – 75||Mandi Hale||N/A||Della Thompson||137|
|1071||3/01/1991||CQF||Lindsay Denyer||53 – 47||Mandi Hale||Gyles Brandreth||Catherine Clarke||69|
|1871||31/10/1996||cQF||Brian Hudson||58* – 48||Mandi Hale||June Whitfield||Susie Dent||83|