Daily episodes that are added via RSS feed will have proper season and episode numbers.

NzbDrone.Core.Test/FluentTest.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using FluentAssertions;
 using NUnit.Framework;
@@ -164,5 +165,31 @@ namespace NzbDrone.Core.Test
             //Resolve
             result.Should().Be("http://www.nzbdrone.com");
         }
+
+        [Test]
+        public void MaxOrDefault_should_return_zero_when_collection_is_empty()
+        {
+            //Setup
+
+
+            //Act
+            var result = (new List<int>()).MaxOrDefault();
+
+            //Resolve
+            result.Should().Be(0);
+        }
+
+        [Test]
+        public void MaxOrDefault_should_return_max_when_collection_is_not_empty()
+        {
+            //Setup
+            var list = new List<int> {6, 4, 5, 3, 8, 10};
+
+            //Act
+            var result = list.MaxOrDefault();
+
+            //Resolve
+            result.Should().Be(10);
+        }
     }
 }

NzbDrone.Core/Fluent.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Runtime.InteropServices;
 using System.Text;
 
@@ -51,5 +52,15 @@ namespace NzbDrone.Core
         {
             return uri.AbsoluteUri.Remove(uri.AbsoluteUri.Length - String.Join("", uri.Segments).Length - uri.Query.Length);
         }
+
+        public static int MaxOrDefault(this IEnumerable<int> ints)
+        {
+            var intList = ints.ToList();
+
+            if (intList.Count() == 0)
+                return 0;
+
+            return intList.Max();
+        }
     }
 }

NzbDrone.Core/Providers/EpisodeProvider.cs

@@ -138,9 +138,25 @@ namespace NzbDrone.Core.Providers
                         SeriesId = parseResult.Series.SeriesId,
                         AirDate = parseResult.AirDate.Value,
                         Title = "TBD",
-                        Overview = String.Empty,
+                        Overview = String.Empty
                     };
 
+                    var episodesInSeries = GetEpisodeBySeries(parseResult.Series.SeriesId);
+
+                    //Find the current season number
+                    var maxSeasonNumber = episodesInSeries.Select(s => s.SeasonNumber).MaxOrDefault();
+
+                    //Set the season number
+                    episodeInfo.SeasonNumber = (maxSeasonNumber == 0) ? 1 : maxSeasonNumber;
+
+                    //Find the latest episode number
+                    var maxEpisodeNumber = episodesInSeries
+                                                .Where(w => w.SeasonNumber == episodeInfo.SeasonNumber)
+                                                .Select(s => s.EpisodeNumber).MaxOrDefault();
+
+                    //Set the episode number to max + 1
+                    episodeInfo.EpisodeNumber = maxEpisodeNumber + 1;
+
                     AddEpisode(episodeInfo);
                 }