Table:
0
A
B
C
D
E
F
1
Total#
Series#
Title
Writer
Director
Original air date
2
14
1
" Sister Hood "
Dominic Minghella
Ciaran Donnelly
6October2007 , 7.30–8.15pm
3
15
2
" The Booby and the Beast "
Simon Ashford
Ciaran Donnelly
13October2007 , 7.30–8.15pm
4
16
3
" Childhood "
Jason Sutton
Ciaran Donnelly
20October2007 , 7.15–8.00pm
5
17
4
" The Angel of Death "
Julian Unthank
Matthew Evans
27October2007 , 7.15–8.00pm
6
18
5
" Ducking and Diving "
Debbie Oates
Matthew Evans
3November2007 , 7.15–8.00pm
7
19
6
" For England…! "
Rob Heyland
James Erskine
10November2007 , 7.20–8.05pm
8
20
7
" Show Me the Money "
Julian Jones
James Erskine
17November2007 , 7.05–7.50pm
9
21
8
" Get Carter! "
Richard Stoneman
Roger Goldby
24November2007 , 7.15–8.00pm
10
22
9
" Lardner's Ring "
John Fay
Roger Goldby
1December2007 , 7.15–8.00pm
11
23
10
" Walkabout "
Richard Kurti and Bev Doyle
Matthew Evans
8December2007 , 6.50–7.35pm
12
24
11
" Treasure of the Nation "
Simon J. Ashford
Matthew Evans
15December2007 , 7.15–8.00pm
13
25
12
" A Good Day to Die "
Dominic Minghella
David Evans
29December2007 , 6.00–6.45pm

Questions and formulas:
Question: Who is the director of the episode that corresponds to the total episodes number 14? 
Formula: LET(query1,SUMMARIZE(E1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,2)=14))
Formula2: LET(query1,SUMMARIZE(E2:E13,SUMX(A2:A13)),FILTER(query1,CHOOSECOLS(query1,2)=14))
Level: hard
Question: What's the title of the episode that Rob Heyland wrote? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="Rob Heyland"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F13,D2:D13="Rob Heyland"),3))
Level: medium
Question: What number from the total number of episodes is the episode written by Julian Unthank?
Formula: SUMIFS(B1,D1,"Julian Unthank")
Formula2: SUMIFS(B2:B13,D2:D13,"Julian Unthank")
Level: easy