How many detective novels did the author of Murder on the Orient Express write?
66
3
2
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
4
3
2
1
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
0
3
2
1
5
4
3
2
1
0
5
4
3
2
1
0
5
4
3
2
1
6
5
4
0
3
2
1
6
5
4
3
2
1
0
6
5
4
7
1
6
0
5
4
7
6
5
4
0
7
6
5
4
7
0
6
5
4
7
6
0
5
4
7
6
5
7
6
8
5
7
6
8
7
9
6
8
7
9
6
8
7
9
11
6
10
8
7
9
11
6
10
8
7
9
11
6
10
8
13
7
9
11
6
10
8
13
7
12
9
11
6
10
8
13
7
12
9
11
6
10
8
13
7
12
9
11
6
10
8
13
7
12
9
11
10
8
13
66
66
62
102
66