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These are all documents in my collection: { "_id" : ObjectId("5110291e6ee1c31d5b275d01"), "d" : 24, "s" : [ 1, 2, 3 ] } { "_id" : ObjectId("511029266ee1c31d5b275d02"), "d" : 24, "s" : [ 4, 5, 6 ] } { "_id" : ObjectId("5110292e6ee1c31d5b275d03"), "d" : 24, "s" : [ 7, 8 ] } This the query I want to run: mongo = get_collection(self.collection_name) res = mongo.find().sort([('_id', -1)]).skip(1).limit(1) get_collection() is a helper method that I've made. Iterating over the cursor, res , produces only one document: res = mongo.find().sort([('_id', -1)]).skip(1).limit(1) for document in res: print document > {u's': [4.0, 5.0, 6.0], u'_id': ObjectId('511029266ee1c31d5b275d02'), u'd': 24.0} However, accessing res using offsets returns two different documents for the 0th and 1st element: res = mongo.find().sort([('_id', -1)]).skip(1).limit(1) pprint(res[0]) > {u'_id': ObjectId('511029266ee1c31d5b275d02'), u'd': 24.0, u's': [4.0, 5.0, 6.0]} pprint(res[1]) > {u'_id': ObjectId('5110291e6ee1c31d5b275d01'), u'd': 24.0, u's': [1.0, 2.0, 3.0]} Is this a bug? limit(1) should only return one result, no?

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